Domain: harvard.edu
Stories and comments across the archive that link to harvard.edu.
Comments · 3,112
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Re:More playing fast and free with facts?
I rather doubt a poll of people on their familiarity with QED (this wikipedia page will do: http://en.wikipedia.org/wiki/Quantum_electrodynamics) would tell you much about how good a job it does, as a theory, in accounting for the relevant experimental results.
Science - thank goodness - is not some version of American Idol.
Plasma physics is pretty darn quantitative, and it has been applied (quantitatively) to astronomical observations, in order to develop hypotheses and models, to explain (in terms of mechanisms and processes) the fine details of the data that comes from the instruments attached to telescopes ... as the thousands of papers on MHD (magnetohydrodynamics - what Alfvén got his Nobel for) in databases such as ADS will attest [source: http://adswww.harvard.edu/)*.
If you - or any other reader of this comment - are interested in learning why Peratt's 'astronomy' papers (on galaxies, for example) are not cited by anyone (except himself), why not join an internet discussion forum where lots of folk with degrees in physics (including plasma physics), astronomy, etc hang out^? It would surely be interesting, wouldn't it? I mean, we could have a discussion on his papers, in terms of how well he has applied plasma physics and tested hypotheses against the actual astronomical observations .... quantitatively!
Surely this is how science is done? By developing (testable) hypotheses ... and actually testing them?
Or do you think the only people in the world who know enough about plasma physics, as applied to 'things we see in the sky' (beyond the Earth's atmosphere), to be able to do this kind of science are Peratt and Thornhill (despite the thousands who have PhDs in just this)?
* If you need some help finding these thousands of papers, just say so; I'd be only to pleased to help you.
^ For avoidance of doubt, none of the 'Electric Universe' fora I am aware has any quantitative discussions (equations, numbers, estimated uncertainties, etc), of astronomical phenomena ... I'd love to be proven wrong. -
Re:They just wanted...
Yeah, but he was forced to take some hormones or something after being accused of being gay, maybe that caused the imbalance that led to his suicide. Terrible loss anyway...
it's entirely possible. testosterone, despite all the bad press about steroids lately (and no, i'm not a juicer), has a very positive effect on a man's sense of well-being. when testosterone drops, men become depressed. and estrogen reduces endogenous testosterone production by increasing negative feedback at the hypothalamus and pituitary. which, btw, is another reason not to get fat, it increases your estrogen and decreases your testosterone. -
Solve this quickly
Solve this very quickly: Dilute his trademark by spelling it lower case and use the term in a link to an(other) attorney's site. He can't sue the attorney and can't sue you. If you recall, Google got upset when everyone was using "googling" and they tried in vain to stop it because it would dilute the trademark they had created, and that was Google, a company that actually is doing something worth trademarking not some half-wit attorney who thinks he knows cyberlaw or even cyberlaw or possibly cyberlaw and EVEN cyberlaw.
Take that ya farging bastitch. -
Re:Mecca and MedinaWow, talk about putting the cart before the horse. Have you done any research into neurophysiology at all or are you just pretending to know what you're talking about? IANANP, but the basic concepts of neurophysiology aren't that difficult to come to grips with. How can you possibly separate neuron firing from these things you call thoughts? Do some basic research into how the brain works. I recommend "On Intelligence" by Jeff Hawkins for a pretty understandable primer about how the brain does what it does. If we can manipulate the brain by sticking electrodes in there or poking it with a stick causing artificially generated thoughts (like the girl laughing for no reason at all and finding everything unexplainably funny when they poked her brain in a certain place [citation], or the experiments whereby artificial spiritual experiences or out-of-body sensations can be produced by stimulation directly or with magnetic fields applied to the brain) then what's the use of positing some extra layer of complexity that is not needed and is only trying to create a disconnect where none exists?
And why not be cranky about it? It's time that people get over bullshit like this and stop trying to fill their ever-shrinking gaps with their beloved imaginary friends/ghosts/souls.
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Re:How does that work, exactly?
This will get you started. http://www.cfa.harvard.edu/iau/info/Astrometry.html#name
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Re:Space shifting is not clear
Someone should mod you up for "informative".
Anyways, I found the /. posting where I got the "decidedly legal" idea about space-shifting. From that posting, TFA makes that claim, and references the Rio case that is discussed in the wikipedia article you shared. But in the Napster case, it seems that the context of that ruling [against space-shifting] would not include ipods*. The MP3.com case seems to be in a similar context. Is it true that the law differentiates between various kinds of space-shifting? If so, then it looks like copying to an ipod is legit.
*or any other portable mp3 player -
Let's look at the Keck observations, shall we?pln2bz, quoting his fave non-science source:
Planetary scientists continue to perpetuate misunderstanding when they call the "Tiger Stripes" of Enceladus "cracks" that allow water to reach the surface. The channels are, in fact, precise analogs of those seen on Europa. Their frequent parallelism, their ridges or levees, and their ability to cut across all other channels in their paths stand as a definitive contradiction of the "fracturing" hypothesis. The pictures suggest something akin to a "claw" or router bit dragged across the surface in disregard for prior surface relief. That is a unique signature of an electric arc. In contrast, fracturing is invariably affected by a pre-existing surface channel or groove, as anyone who has ever worked with a glasscutter knows very well.
Now let's see what Schneider et al. actually found, per the abstract of the conference paper that the SD story which all these comments are on (source: http://adsabs.harvard.edu/abs/2007AGUFM.P11F..08S)
A groundbased telescopic search for sodium emission near Saturn's moon Enceladus places a firm upper limit on the possible amount of sodium released by eruptions there. Independent observations at the Keck and Anglo- Australian Telescopes using high resolution spectroscopy failed to detect any sodium emission near Enceladus, despite the high sensitivity of such instruments to minute amounts of sodium originating at Jupiter's moons Io and Europa. Large amounts of sodium would be expected if Enceladus' plume material were derived directly from a long-lived ocean (or more confined "sea") in contact with rocky material. Chemical models predict that sodium would dissolve into such an ocean at mixing ratios relative to water of 10-4 to 10-1 (Zolotov et. al, 2007). Our numerical plumes models show that such high sodium concentrations would result in a long-lived torus of sodium encircling Saturn. Our detection upper limits fall orders of magnitude below these models, leading us to conclude that the Enceladus plumes do not originate in an ocean or sea. These observations support the alternative theories that Enceladus' plumes are generated by shear heating of the icy crust - resulting in sublimation or melting - or the decomposition of clathrates. These results do not rule out the possibility that a deep ocean exists at depth that is not directly responsible for the plumes. Plume sampling by Cassini or potential future missions, however, would not be probing this potentially habitable environment. This work has been supported by NSF's Planetary Astronomy Program.
(I added the bold re Io and Europa).
So, pln2bz would have us accept that certain surface features on Io, Europa, AND Enceladus are *all* due (entirely?) to 'sputtering' or 'electric arcs', based solely (so it would seem) on certain qualitative similarities in the appearance of these features with some lab materials blasted with plasma guns^.
However, despite the SD story having been up for over 10 days, he apparently did not bother to check the source, nor check whether Thornhill (or any other 'EU Theory' authority) commented on (or was even aware of) the apparent inconsistency; namely that the Keck results suggest the method of formation of the Enceladus features is not the same as the Io or Europa ones (for avoidance of doubt, the Keck results do not *prove* anything; such is the nature of modern science).
What say you, pln2bz? Within the 'EU Theory' paradigm, is it legitimate to introduce evidence, concerning Enceladus' plumes in this case, beyond qualitative similarities in images? Especially when that (other) evidence is quantitative? When it is independent of the images?
And if it is legitimate, how should that evidence be weighed? To what extent do the qualitative similarities trump the quantitative spectroscopic data? Or do 'EU Theorists' feel compelled to develop mathematical models of these hypothesised arcs and sputterings, -
Re:I bet the Mafiaa Won't Like That
Who cares what they do, they have a population of what about 69,481 they leave Harvard alone and they have 33213 students and Facultyif the Antiguan and Barbudans ignore copyright who cares what they do in their country with a GDP - per capita of $10,900 it's unlikely that they are even on the RIAA or MPAA's radar. If they resell, and the bootleg stuff is exported then the importer is shit-outta-luck if they are caught.
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the scale seems off
According to the scale in this photo, these galaxies are only half the size of Stonehenge.
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The difference this time around...
The difference this time around is that TFA has some cool, high def pics that I can crop for my desktop wallpaper
:-)
PS (6.9 MB)
Tiff (43.4 MB) -
The difference this time around...
The difference this time around is that TFA has some cool, high def pics that I can crop for my desktop wallpaper
:-)
PS (6.9 MB)
Tiff (43.4 MB) -
Re:What about postscript?
The problem with postscript is that it can be alife.
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hypervelocity star
It could've been a hypervelocity star.
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The universe beyond the solar system ... astronomyEverything we think we know about the universe beyond the solar system derives from the detection of photons*.
It is from analyses of these detections that we derive conclusions about stars made of hydrogen, of clouds of tenuous gas and dust, of regions of hot plasma, and so on.
Many of these detections are presented as pictures, or images, such as those presented daily at Astronomy Picture of the Day (APOD http://antwrp.gsfc.nasa.gov/apod/ap071220.html).
Some are just like what we can see with our own eyes (example: http://antwrp.gsfc.nasa.gov/apod/ap070508.html).
Some are 'false colour' images, but close enough to what we imagine we might see if only we could look through the eyepiece of the telescope (example: http://antwrp.gsfc.nasa.gov/apod/ap070418.html).
It's but a small step to look at other false colour images, taken in the infrared for example, through what is obviously just a telescope, and imagine we can interpret them similarly (example: http://antwrp.gsfc.nasa.gov/apod/ap070413.html).
Other images are false colour composites, with one or more components having been taken by something that may bear little resemblance to our backyard refractor; nonetheless we may feel we can still interpret them similarly (example: http://chandra.harvard.edu/photo/2006/crab/index.html).
However, reading the details of how photon/EMR detection got turned into an image quickly reveals that we should be very cautious when it comes to interpreting these images. For example, take this combined (Chandra) x-ray and (VLA) radio 'image' of the supernova remnant G11.2-0.3 (http://chandra.harvard.edu/photo/2007/g11/index.html). Here is a description of how the x-ray image was created (source: http://arxiv.org/abs/astro-ph/0107292):NASA's Chandra X-ray Observatory observed G11.2-0.3 at two epochs, the first (Sequence Number 50076) on 2000 August 6, and the second (Sequence Number 50077) on 2000 October 15. The exposure for the first epoch was 20 ks. The second epoch consisted of two exposures, one of 10 ks and the other of 5 ks. In all observations, the remnant was positioned on the back-illuminated CCD chip S3 of the ACIS instrument in standard exposure mode. In this mode, the time resolution (3.2 s) is too coarse to resolve the pulsations from the pulsar.
The data were analyzed using the CIAO 2.02 and MIRIAD software packages. Following the energy binning scheme of Hughes et al. (2000), we added together the individual count maps from the three different observing epochs in the 0.6-1.65 keV, 1.65-2.25 keV, and 2.25-7.5 keV energy bands. Spectrally weighted exposure maps were created for each observation and energy band, and were summed over the three observations, creating a total count map and exposure map for each energy band. The count maps were divided by the exposure maps, and the result convolved with a 5" FWHM Gaussian to enhance the nebular structure given the low count rate. The three individual maps were then combined into a 3-color image, with red, green, and blue assigned to the low, medium, and high energy bands respectively.And the radio image (source http://arxiv.org/abs/astro-ph/0202262):
Radio observations of G11.2-0.3 were made with the VLA at 20 and 6 cm (L- and C-bands, respectively), between 1984 April and 1985 May. Details of these observations are summarized in Table 1.
Data reduction and analysis were performed using standard procedures within the miriad package (Sault & Killeen 1999). The data were flux-density and anten -
The universe beyond the solar system ... astronomyEverything we think we know about the universe beyond the solar system derives from the detection of photons*.
It is from analyses of these detections that we derive conclusions about stars made of hydrogen, of clouds of tenuous gas and dust, of regions of hot plasma, and so on.
Many of these detections are presented as pictures, or images, such as those presented daily at Astronomy Picture of the Day (APOD http://antwrp.gsfc.nasa.gov/apod/ap071220.html).
Some are just like what we can see with our own eyes (example: http://antwrp.gsfc.nasa.gov/apod/ap070508.html).
Some are 'false colour' images, but close enough to what we imagine we might see if only we could look through the eyepiece of the telescope (example: http://antwrp.gsfc.nasa.gov/apod/ap070418.html).
It's but a small step to look at other false colour images, taken in the infrared for example, through what is obviously just a telescope, and imagine we can interpret them similarly (example: http://antwrp.gsfc.nasa.gov/apod/ap070413.html).
Other images are false colour composites, with one or more components having been taken by something that may bear little resemblance to our backyard refractor; nonetheless we may feel we can still interpret them similarly (example: http://chandra.harvard.edu/photo/2006/crab/index.html).
However, reading the details of how photon/EMR detection got turned into an image quickly reveals that we should be very cautious when it comes to interpreting these images. For example, take this combined (Chandra) x-ray and (VLA) radio 'image' of the supernova remnant G11.2-0.3 (http://chandra.harvard.edu/photo/2007/g11/index.html). Here is a description of how the x-ray image was created (source: http://arxiv.org/abs/astro-ph/0107292):NASA's Chandra X-ray Observatory observed G11.2-0.3 at two epochs, the first (Sequence Number 50076) on 2000 August 6, and the second (Sequence Number 50077) on 2000 October 15. The exposure for the first epoch was 20 ks. The second epoch consisted of two exposures, one of 10 ks and the other of 5 ks. In all observations, the remnant was positioned on the back-illuminated CCD chip S3 of the ACIS instrument in standard exposure mode. In this mode, the time resolution (3.2 s) is too coarse to resolve the pulsations from the pulsar.
The data were analyzed using the CIAO 2.02 and MIRIAD software packages. Following the energy binning scheme of Hughes et al. (2000), we added together the individual count maps from the three different observing epochs in the 0.6-1.65 keV, 1.65-2.25 keV, and 2.25-7.5 keV energy bands. Spectrally weighted exposure maps were created for each observation and energy band, and were summed over the three observations, creating a total count map and exposure map for each energy band. The count maps were divided by the exposure maps, and the result convolved with a 5" FWHM Gaussian to enhance the nebular structure given the low count rate. The three individual maps were then combined into a 3-color image, with red, green, and blue assigned to the low, medium, and high energy bands respectively.And the radio image (source http://arxiv.org/abs/astro-ph/0202262):
Radio observations of G11.2-0.3 were made with the VLA at 20 and 6 cm (L- and C-bands, respectively), between 1984 April and 1985 May. Details of these observations are summarized in Table 1.
Data reduction and analysis were performed using standard procedures within the miriad package (Sault & Killeen 1999). The data were flux-density and anten -
Re:Thanks for the response!
Given that the post which got you into so much trouble was, to all intents and purposes, the same (content-wise) as your first BAUT post, your decision - deliberate or not - to not bother to check on replies to it (the first post) before starting a new thread was foolish and clumsy, at best.
If that were all there was, then you did pay a heavy price for being gauche.
However, your first post contained many pointers to something deeper, something going on behind the scenes as it were.
And a few minutes with Google will lead a disinterested person to a number of very interesting posts by a 'mgmirkin', around the time you posted on BAUT; reading some of those might lead such an unbiased observer to replace gauche with cynical, disingenuous hypocrite ... and that the BAUT mod's decision was entirely justified.
Next, an apology. I mistook a reference in your first BAUT post (to yourself as 'a mad scientist') to mean that you are a professional scientist. It seems I was wrong; certainly there are no citations in ADS (http://adswww.harvard.edu/) for author 'Gmirkin' (Astronomy, Physics, arXiv). But perhaps you got your PhD in a different field of science?
In any case, the second part of your comments, to which I'm replying, clearly indicate an unfamiliarity with contemporary physics, astronomy, space science, astrophysics, cosmology, ...
Perhaps a good way to show this is to compare your link (Conventional vs Maverick Science) with your admiration of Birkeland: it seems you are a fan of both 'Maverick Science' and Birkeland's work, yet apparently unaware of how ironic or inconsistent this is! By your own, preferred, definitions, Birkeland's work was 'Conventional' in the extreme.
It gets better (or worse, depending on your viewpoint).
Birkeland, no doubt, would have been horrified at your characterisation of the state of space science (and plasma physics in general), a century later, as being (still) 'conceptual'; after all, almost all his work involved (quantitative, with numbers, math, and equations) testing the ideas you are excited about.
mgmirkin, the content of your BAUT posts - to the extent it is 'wrong' - is wrong because the detailed, quantitative results of a century (and more) of research - into plasma physics, into aurorae, the Earth's magnetosphere, the solar wind, etc, etc, etc - have long since shown those 'concepts' to be inconsistent with the data.
Let me give you a very small example of just how far beyond the 'conceptual' stage research into aurorae, the Earth's magnetosphere, the solar wind, etc, has got, by referring you to a couple of MSc thesis projects at KTH's School of Electrical Engineering (Space and Plasma Physics section) - the academic institution which includes the Alfvén Laboratory (http://www.spp.ee.kth.se/): Multi-satellite measurements of solar wind plasma structures (http://www.spp.ee.kth.se/edu/exjobb/visaprojekt.html?id=47037), and Study of auroral potentials using multi-satellite data from ESA's Cluster mission (http://www.spp.ee.kth.se/edu/exjobb/visaprojekt.html?id=45773). And their syllabus for graduate studies: (http://www.spp.ee.kth.se/edu/graduate/Syllabus_2002.pdf, a link to a PDF). And the research area of Solar System Plasma Physics: (http://www.spp.ee.kth.se/res/ss/) ... be sure to check out the Publications link.
So, instead of ignorant bombast and vitriol, why not enrol in a university space science and/or plasma physics programme? Why not take the trouble to find out, first hand, for yourself, just how much further advanced we (collectively) are than mere 'concepts'?
And along the way -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:Galactic charge into the sun? How?
Though I don't have a copy of either in front of me at the moment, I believe this topic is covered in either The Electric Sky by Don Scott or The Electric Universe by Wal Thornhill and Dave Talbott. You might want to pick up a copy. Other interesting reads include Lerner's The Big Bang Never Happened, and Arp's Seeing Red. Though they're on slightly different topics.
My understanding is that there is a drift of electrons toward the sun. Yes, a drift. It doesn't take much. Electrical motion is often a very slow process (especially in "dark" currents; IE, currents not in "glow" or "arc" mode) on the order of a few centimeters per hour?
But, in the meanwhile, here are some links to a few abstracts / articles that deal with various bodies as unipolar inductors.
From links found at Plasma-Universe.com:
(Cosmic electric currents and the generalized Bennett relation)
http://adsabs.harvard.edu/abs/1988Ap%26SS.144...73C
(Unipolar Induction of a Magnetized Accretion Disk around a Black Hole)
http://adsabs.harvard.edu/abs/2003AstL...29..153S
(A force - free field theory of solar flares I. Unipolar sunspots)
http://adsabs.harvard.edu/abs/1981ChA%26A...5...77Y
(Electric current in a unipolar sunspot with an untwisted field)
http://adsabs.harvard.edu/abs/1990GeoRL..17.2273O
(Sheath-limited unipolar induction in the solar wind)
http://adsabs.harvard.edu/abs/1975Ap%26SS..36..177S
(Establishment of a Lunar Unipolar Generator and Associated Shock and Wake by the Solar Wind)
http://adsabs.harvard.edu/abs/1967Natur.216..340S
(Unipolar Induction in the Moon and a Lunar Limb Shock Mechanism)
http://adsabs.harvard.edu/abs/1969Moon....1....7S
(The Earth as a unipolar generator)
http://www.iop.org/EJ/abstract/0022-3727/11/5/020
(Io, a jovian unipolar inductor)
http://adsabs.harvard.edu/abs/1969ApJ...156...59G
I might also point out a great repository of peer-reviewed papers on various subjects related to plasma cosmology:
http://public.lanl.gov/alp/plasma/papers.html
Plasma Physics from Laboratory to Cosmos--The Life and Achievements of Hannes Alfvén
Cosmology in the Plasma Universe: An Introductory Exposition
Introduction to Plasma Astrophysics and Cosmology
Birkeland and the Electromagnetic Cosmology
The Evidence For Electrical Currents in Cosmic Plasma
The Role of Particle Be -
Re:The More Important DiscoveryIf astrophysicists realize this is essentially an electrical engineering problem, why has it not been diagrammed as such
Because it isn't essentially an electrical engineering problem. Fluid dynamics plays a major role. "Winds," "rains," and "shocks" are all fundamentally fluid dynamics concepts. BTW, this isn't an astrophysics field...we're space physicists. The lines are blurry--one space physicist in our department is doing heliospheric research, and one astrophysicist does a lot of work on magnetic processes (esp. magnetohydrodynamic shocks) beyond the solar system.
We do talk about double layers (and the plasma mantle, and the low latitude boundary layer....), and Birkeland currents, and current closure. We use the terminology that seems best to describe the processes. Sometimes we really are talking about different things and that needs different terminology.
There's a lot of crossover between lab plasma and space plasma research. One of the professors I work with started in fusion research; in the other direction, I know several space physicists who are doing lab work to try and pinpoint processes observed in space. As far as EE, these people build their own instruments. My advisor has dual appointments to astronomy and EE. We use Chen as one textbook.
If you're really interested in the field, Kivelson and Russell is a pretty good introduction, written at roughly an advanced undergrad level (i.e. real E&M). It is getting a bit dated, though; AGU monographs are a decent source of semi-digested information. I do like the Cravens text for something a little meatier (IMO) than K&R, although less applied. Gurnett and Bhattacharjee is up to date and rigorous, but somewhat dense.
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Re:The More Important DiscoveryIf astrophysicists realize this is essentially an electrical engineering problem, why has it not been diagrammed as such
Because it isn't essentially an electrical engineering problem. Fluid dynamics plays a major role. "Winds," "rains," and "shocks" are all fundamentally fluid dynamics concepts. BTW, this isn't an astrophysics field...we're space physicists. The lines are blurry--one space physicist in our department is doing heliospheric research, and one astrophysicist does a lot of work on magnetic processes (esp. magnetohydrodynamic shocks) beyond the solar system.
We do talk about double layers (and the plasma mantle, and the low latitude boundary layer....), and Birkeland currents, and current closure. We use the terminology that seems best to describe the processes. Sometimes we really are talking about different things and that needs different terminology.
There's a lot of crossover between lab plasma and space plasma research. One of the professors I work with started in fusion research; in the other direction, I know several space physicists who are doing lab work to try and pinpoint processes observed in space. As far as EE, these people build their own instruments. My advisor has dual appointments to astronomy and EE. We use Chen as one textbook.
If you're really interested in the field, Kivelson and Russell is a pretty good introduction, written at roughly an advanced undergrad level (i.e. real E&M). It is getting a bit dated, though; AGU monographs are a decent source of semi-digested information. I do like the Cravens text for something a little meatier (IMO) than K&R, although less applied. Gurnett and Bhattacharjee is up to date and rigorous, but somewhat dense.
-
Re:The More Important DiscoveryIf astrophysicists realize this is essentially an electrical engineering problem, why has it not been diagrammed as such
Because it isn't essentially an electrical engineering problem. Fluid dynamics plays a major role. "Winds," "rains," and "shocks" are all fundamentally fluid dynamics concepts. BTW, this isn't an astrophysics field...we're space physicists. The lines are blurry--one space physicist in our department is doing heliospheric research, and one astrophysicist does a lot of work on magnetic processes (esp. magnetohydrodynamic shocks) beyond the solar system.
We do talk about double layers (and the plasma mantle, and the low latitude boundary layer....), and Birkeland currents, and current closure. We use the terminology that seems best to describe the processes. Sometimes we really are talking about different things and that needs different terminology.
There's a lot of crossover between lab plasma and space plasma research. One of the professors I work with started in fusion research; in the other direction, I know several space physicists who are doing lab work to try and pinpoint processes observed in space. As far as EE, these people build their own instruments. My advisor has dual appointments to astronomy and EE. We use Chen as one textbook.
If you're really interested in the field, Kivelson and Russell is a pretty good introduction, written at roughly an advanced undergrad level (i.e. real E&M). It is getting a bit dated, though; AGU monographs are a decent source of semi-digested information. I do like the Cravens text for something a little meatier (IMO) than K&R, although less applied. Gurnett and Bhattacharjee is up to date and rigorous, but somewhat dense.
-
Re:The More Important DiscoveryI think Gene Parker got the solar wind about right. Hydrodynamics gets a lot of plasma behaviour about right. I recall Cravens has a pretty good treatment of the derivation.
"these are Birkeland Currents?" Which are? I don't know exactly what Dr. Sibeck's quote is referencing, so I'm not going to comment on that. But as I've said, field aligned currents are hardly a controversial matter. Two recent JGR publications. And here's a review paper.
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Re:The More Important DiscoveryI think Gene Parker got the solar wind about right. Hydrodynamics gets a lot of plasma behaviour about right. I recall Cravens has a pretty good treatment of the derivation.
"these are Birkeland Currents?" Which are? I don't know exactly what Dr. Sibeck's quote is referencing, so I'm not going to comment on that. But as I've said, field aligned currents are hardly a controversial matter. Two recent JGR publications. And here's a review paper.
-
Re:The More Important DiscoveryI think Gene Parker got the solar wind about right. Hydrodynamics gets a lot of plasma behaviour about right. I recall Cravens has a pretty good treatment of the derivation.
"these are Birkeland Currents?" Which are? I don't know exactly what Dr. Sibeck's quote is referencing, so I'm not going to comment on that. But as I've said, field aligned currents are hardly a controversial matter. Two recent JGR publications. And here's a review paper.
-
Re:The More Important DiscoveryI think Gene Parker got the solar wind about right. Hydrodynamics gets a lot of plasma behaviour about right. I recall Cravens has a pretty good treatment of the derivation.
"these are Birkeland Currents?" Which are? I don't know exactly what Dr. Sibeck's quote is referencing, so I'm not going to comment on that. But as I've said, field aligned currents are hardly a controversial matter. Two recent JGR publications. And here's a review paper.
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Re:Lovely
...and while the astronomers fiddle with gear you and I can only dream of having access to, take your camera and a tripod outside, and with no more than a portrait lens, you can take shots like these.
Disclaimer: I have a masters in Astronomy but I've never worked in the field. I did the degree "for fun", because I never got the opportunity to study in highschool, and because I wanted to know how we know what we know about the universe. I'm very much an amateur in every respect.
Defintely worth fiddling with camera gear, but at some point if you're taking your own shots you're going to want to use a telescope. Starting with binoculars is definitely the best way. Moving to a dobsonian for viewing (but terrible for photography) is a good next step. (Don't buy anything with a small aperture unless all you're interested in is moon and planets). Next good step would be a Newtonian on EQ mount or SCT. It gets very expensive very quickly. I pretty much gave up on astrophotography. (I live in a large city and when I do get away far enough, I'm usually exhausted from the drive, and there are other priorities (family). Also a 10" scope takes up a hell of a lot of room even in a station wagon).
An alternative to the above is to get hold of sky survey data that's already available and captured by the pro images. There's a lot out there that gets released usually after a year (to give the professional scientists time to work with it). Hubble data, Chandra X-Ray data, SOHO images. It's not all pretty composite colour pictures - you often have to learn to manipulate the images with image software or with more complex data there's specialized software that's not always for the faint of heart (often free, often Linux based). "Amateurs" have done amazing things with some of the images and data. In astronomy there is an "image" (FITS) file format that is actually more than just a simple JPEG etc. You have a background in photography so while it's not strictly RAW data in the sense that it's not coming straight off a sensor, you can think of this format as containing more information the way RAW contains more than JPEG (stuff like calibration information). More information here.
http://en.wikipedia.org/wiki/FITS
http://heasarc.gsfc.nasa.gov/docs/heasarc/fits.html
Please understand I'm not trying to discourage you from backyard astronomy. I just thought you might be interested in this too. These days the guys that take the images/capture data and the guys that analyse them are not always the same. ie. you often have technicians that specialise in running the machines.
Here are some links for you:
FITS data from lots of missions/instruments
http://heasarc.gsfc.nasa.gov/docs/archive.html
Digitized Sky Survey
http://archive.eso.org/dss/dss
http://archive.stsci.edu/cgi-bin/dss_form
Hubble
http://hubblesite.org/
SOHO
http://sohowww.nascom.nasa.gov/
Chandra
http://chandra.harvard.edu/
http://chandra.harvard.edu/resources/
If you want more detail and are prepared to try to work out science speak, you can get access to draft papers on:
http://arxiv.org/
Look under astrophysics
I don't have time to go into any more. Hope you're interested. -
Re:Lovely
...and while the astronomers fiddle with gear you and I can only dream of having access to, take your camera and a tripod outside, and with no more than a portrait lens, you can take shots like these.
Disclaimer: I have a masters in Astronomy but I've never worked in the field. I did the degree "for fun", because I never got the opportunity to study in highschool, and because I wanted to know how we know what we know about the universe. I'm very much an amateur in every respect.
Defintely worth fiddling with camera gear, but at some point if you're taking your own shots you're going to want to use a telescope. Starting with binoculars is definitely the best way. Moving to a dobsonian for viewing (but terrible for photography) is a good next step. (Don't buy anything with a small aperture unless all you're interested in is moon and planets). Next good step would be a Newtonian on EQ mount or SCT. It gets very expensive very quickly. I pretty much gave up on astrophotography. (I live in a large city and when I do get away far enough, I'm usually exhausted from the drive, and there are other priorities (family). Also a 10" scope takes up a hell of a lot of room even in a station wagon).
An alternative to the above is to get hold of sky survey data that's already available and captured by the pro images. There's a lot out there that gets released usually after a year (to give the professional scientists time to work with it). Hubble data, Chandra X-Ray data, SOHO images. It's not all pretty composite colour pictures - you often have to learn to manipulate the images with image software or with more complex data there's specialized software that's not always for the faint of heart (often free, often Linux based). "Amateurs" have done amazing things with some of the images and data. In astronomy there is an "image" (FITS) file format that is actually more than just a simple JPEG etc. You have a background in photography so while it's not strictly RAW data in the sense that it's not coming straight off a sensor, you can think of this format as containing more information the way RAW contains more than JPEG (stuff like calibration information). More information here.
http://en.wikipedia.org/wiki/FITS
http://heasarc.gsfc.nasa.gov/docs/heasarc/fits.html
Please understand I'm not trying to discourage you from backyard astronomy. I just thought you might be interested in this too. These days the guys that take the images/capture data and the guys that analyse them are not always the same. ie. you often have technicians that specialise in running the machines.
Here are some links for you:
FITS data from lots of missions/instruments
http://heasarc.gsfc.nasa.gov/docs/archive.html
Digitized Sky Survey
http://archive.eso.org/dss/dss
http://archive.stsci.edu/cgi-bin/dss_form
Hubble
http://hubblesite.org/
SOHO
http://sohowww.nascom.nasa.gov/
Chandra
http://chandra.harvard.edu/
http://chandra.harvard.edu/resources/
If you want more detail and are prepared to try to work out science speak, you can get access to draft papers on:
http://arxiv.org/
Look under astrophysics
I don't have time to go into any more. Hope you're interested. -
Re:Very Nice
Actually, that reference manual is _way_ out of date. Use this instead: http://modular.fas.harvard.edu/sage/doc/html/ref/index.html
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Pretty enough?
I'd say yes.
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Mirror links
The site is already very slow, so posting the actual links.
http://www.sagemath.org
http://sage.math.washington.edu/sage
http://modular.fas.harvard.edu/sage
http://www.opensourcemath.org/sage/
http://www.cecm.sfu.ca/sage
http://sage.apcocoa.org
http://echidna.maths.usyd.edu.au/sage
http://sage.scipy.org/sage -
Re:Beware early adoptersMy wife's an oncologist, and one of the toughest parts of the job has been learning how to talk to patients with fatal diseases. I thought it was interesting that her medical school offered a class about it, entitled "Living with a Life Threatening Illness." http://www.hno.harvard.edu/gazette/2000/04.06/dying.html It makes me appreciate what doctors go through.
From the article: "The course originated from wrenching situations experienced by two medical students. Anne Hallward had worked as a hospital chaplain before coming to Harvard Medical School. Part of her job involved accompanying physicians, usually interns, when they gave families the news of the sudden death of loved ones. The doctors, Hallward recalls, felt enormous anxiety, sometimes clutching her arm and asking her what to say. The result was that they often gave information about an unexpected death in cold, hurried words loaded with medical jargon. As a third-year medical student who was part of a surgical team, Joshua Hauser found that the surgeons were poorly prepared for handling the fear, pain, and sadness felt by patients nearing the end of their lives. In exploring the situation further, he got a lot of insight from conversations with a woman suffering from metastatic breast cancer. The woman had once asked doctors at a medical conference why they were not taught more about how to communicate with people about death and dying."
It must help to have someone communicate this type of information who has experience doing so, and who can help you evaluate it rationally. Well, as least as much as rationality has a place when we're talking about death (de Certeau has a good chapter about this in Practice of Everyday Life that we were just discussing).
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Re:Sure and that's what Apple said about Apple tooIf Hormel loses, we will no longer know if we are getting the genuine SPAM, or an imitator, when we go the supermarket.
That's hype. In the arena of food products, the SPAM mark will still be valid and enforceable.
To quote The Berkman Center for Internet and Society at Harvard Law School:
So, for example, the use of an identical mark on the same product would clearly constitute infringement. If I manufacture and sell computers using the mark "Apple," my use of that mark will likely cause confusion among consumers, since they may be misled into thinking that the computers are made by Apple Computer, Inc. Using a very similar mark on the same product may also give rise to a claim of infringement, if the marks are close enough in sound, appearance, or meaning so as to cause confusion. So, for example, "Applet" computers may be off-limits; perhaps also "Apricot." On the other end of the spectrum, using the same term on a completely unrelated product will not likely give rise to an infringement claim. Thus, Apple Computer and Apple Records can peacefully co-exist, since consumers are not likely to think that the computers are being made by the record company, or vice versa.
-- http://cyber.law.harvard.edu/metaschool/fisher/domain/tm.htm#7, emphasis mineThe first boldfaced bit covers your end-of-the-world hyperbole case. The second boldfaced bit is the actual case: The same trade name applied to distinct and unrelated products will probably not be infringement, which is borne out in the specific lawsut TFA was about.
ObDisclaimer: IANAL, but I bet the clever chaps at Harvard Law School are.
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bull S*** $100 million per track mile
There are many ways to make maglev,
The work of Eric Laithwaite Induct tract methods are expensive, but there are also
Eddy Current levitation and Servo Feedback levitation.
With the last 2 the track could just an aluminum rail. On the train is super magnets, like Neodymium Rare Earth magnets. When you move the train it will generate eddy currents and repel in a manner similar to super conductive levitation this is call Lenz's law.
http://www.fas.harvard.edu/~scidemos/ElectricityMagnetism/MagneticLevitation/MagneticLevitation.html
Also Electro Magnets could be used with an alternating current to repel the aluminum track and provide lift and also move the train alone a plain (passive) aluminum track using magnetic hysteresis.
The point it the track could be make very cheap and put the more expensive coils or magnets on the train itself. it's possible to do the whole thing purely mechanical too. -
Re:I'm a senior at Harvard
I'm probably overestimating actually. Lately, we've only had about 60-70 CS majors per class (see the bottom of http://webdocs.registrar.fas.harvard.edu/ugrad_handbook/current/chapter3/computer_science.html)
There's a lot of EEs in my classes, but that's probably because I'm taking all the hardware courses. In the theory courses I haven't met anyone outside of CS and applied math, so I can't really answer the question well, outside of what the CUE guide reports as folks taking x class as an elective, and I can't really bother to trawl through those right now. -
News Flash!!!Slashdot submitter smears Discovery Institute. News at 11.
Oh, btw, if you go directly to Harvard to view this video, you will see this notice:
For educational use only.
The use, distribution, or duplication
of this material for any commercial
purpose is strictly prohibited.Gee. For educational use only. I guess by the definition of our submitter, a conference which includes a session led by a Ph.D. couldn't possibly be for educational use.
And did you know that the initial versions of this video only had a music sound track? The creator of this video talks, David Bolinsky, talks to an early version of this video here. And it is very possible that the sound track used at the Dembski presentation pre-dated the later soundtrack(s) added by Harvard. In any case, this would not have violated the "For educational use only" policy.
But don't let the facts interfere with your smear campaign.
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The Reason
I think one likely reason that the RIAA/MPAA are avoiding Harvard is because of the Berkman Center for Internet & Society which is an outgrowth of the Harvard Law school. You may be familar with Berkman through the Chilling Effects Clearinghouse, OpenNet Initiative (mapping government repression of the Internet worldwide), and the Stop Badware projects.
Berkman is very forward-looking and proactive regarding emerging issues of Law and Technology. The various fellows have been vocal and supportive of copyright reform. With such an interested, knowledgeable band of law professors and law students, it would be a serious black-eye if the RIAA attempted to litigate on the Harvard campus. I have to believe that they would be handed a bruising defeat, that would establish precedent regarding their campaign of extorting* settlement monies from poor college students.
* I mean extortion in the common, non-technical sense. Don't sue me for libel please. -
Submitter is Charles Nesson, Professor of Law
The submitter of the story is Charles Nesson, who is Professor of Law at Harvard Law School. See also Wikipedia.
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Re:My alternative theory...It would be far too complex to edit a Harvard video to add commentary,
Haha. More complex than editing your (posted) /. post?
BTW: You can watch the harvard video here: http://multimedia.mcb.harvard.edu/media.html
That was a superb animation. I watched it for the first time 3 months ago. Another version goes with no commentaries but only music and you can find it from Youtube. -
Re:Cost vs Benefit?
Looks like quite a few economists agree with your argument.
Here are 17 well-known economists, 5 of these having received the Nobel Memorial Price in Economic Sciences, making the same argument.
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Re:High glycemic carbs
Harvard School of Public Health says that it's whole-grain pastas that have low glycemic index and are good. Make sure they're whole-grain pastas, not cheapo Wal-Mart or HEB pasta.
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Advice on nutrition from the 1970s
The recommended advice of replacing fats with carbohydrates was repeated so often and so forcefully by everyone, that it's now printed on the back of almost every box of food in the country, in the form of the "USDA food pyramid". It was so often repeated that when I was a child (in the 1970s) things like wonder bread with a bit of margarine were considered health foods (lots of carbs, no saturated fat).
I had always assumed that the medical community had done large-scale long-term studies demonstrating that such a diet led to an increase in lifespan, a reduction in disease, and a loss of unhealthy pounds. Apparently, such studies were never done.
But then the massive Harvard Nurses Heatlh Study was performed, ending in the mid-1990s. In that study, researchers followed 40,000 nurses for decades, in what was the largest and most comprehensive study on human nutrition ever. The study found that replacing fats with carbohydrates had absolutely no effect on longevity or disease. Furthermore, replacing butter with margarine (the standard dietary advice for decades) led to no benefit either. IIRC, the only nurses who lived longer and had less disease were those who ate nutrient-dense monounsaturated fats like almonds and cashews.
As a result of the Harvard Nurses Health Study, researchers in nutrition quietly dropped their assumptions about dietary fats causing disease.
I still can't believe it. The standard dietary advice from 1960 to 1990 must have been the single largest pseudoscientific load of crap in modern history. What a colossal embarrassment. If the USDA publicly admits that it was mistaken then it will be a long time before people trust it again.
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Marketing hype vs science factYes, I agree that there is an incredible amount of hype concerning some things. However, Omega-3 fatty acids DO have a lot of science-base showing they do help. They are no cure-all or miracle by any stretch, of course but do serve a purpose (PDF): What are omega-3 fatty acids, and why should I make sure to include them in my diet?
Omega-3 fatty acids (also known as n-3 fatty acids) are polyunsaturated fatty acids that are essential nutrients for health. We need omega-3 fatty acids for numerous normal body functions, such as controlling blood clotting and building cell membranes in the brain, and since our bodies cannot make omega-3 fats, we must get them through food. Omega-3 fatty acids are also associated with many health benefits, including protection against heart disease and possibly stroke.
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Already researched in 2002 ...
"Replacement of Google with Alternative Search Systems in China — Documentation and Screen Shots"
http://cyber.law.harvard.edu/filtering/china/google-replacements/
Last Updated: September 24, 2002
On this basis: "Google censors itself for China" — http://news.bbc.co.uk/1/hi/technology/4645596.stm — Wednesday, 25 January 2006
Define ethics and business ethics within the context of a multi-billion dollar market. Do not be shy!
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Re:Prosecute them.
Well, SOMEbody's scared SHITLESS:
http://blogs.law.harvard.edu/fensterm/2007/11/15/guantanamo-manual-leak-has-wikileaks-been-censored/
ALL the material, at least what might have been seen as juicy, is gone. So, so much for the theory that it was a CIA front.
Maybe Control and Kaos (the NEW Kaos) are supporting each other? Sigfried and Coy.
Man oh Man...