Well, history might tell us something. They didn't bow to the pressure of Microsoft when they came out with their Mac/GUI competitor, Windows, increasing the PC's viability and ease of use. But they didn't suddenly try to increase market share by allowing OEMs. Will things be different this time around if competition heats up?
Is a link between Alaska and Siberia underneath the Bering Strait, and we could have a truly Pan-Continental Rally Race, starting in Scotland, working its way down to Europe thru the Chunnel, then onto Africa via this new tunnel, to the tip of South Africa, back up through Arabia over the Suez Canal, up though China and Sibera, across to Alaska, down the Canadian Pacific Coast, into Mexico, through Central America, across the Panama Canal, into Colombia, and down the Pan-American Highway into the very tippy tip of South America in Argentina!
This is an excellent idea! It will boost tourism to North Africa, and hopefully spur further development and political stability in the North African nations, such as Morroco, Tunisia, Eretria, etc. Look at what the Chunnel has done for cross-traffic between England and France.
The problem with your argument is that most people don't want to download all the songs on an album- they only want a few. To download 2 or 3 good songs off of an album at high quality (192kbps+) still takes less time than it would to get in your car and drive to the store. And it is also infinitely cheaper.
And be it that it may that you are only interested in music, many other people do have other interests. I use kazaa k++ for perfectly legitimate reasons, such as finding beta patches to games or looking for humerous video clips.
Why should people "just buy the factory CDs anyway"? Most of them are crap. They are a waste of money. The RIAA has screwed itself with its own corporate greed by constantly promoting artists that are without talent. If I want to show the artists that I enjoy what they do, I will go to a live performance. Most artists are not seeing any substantial income from their CD sales- that gets eaten up by the record companies for a bunch of bullshit fees and promotion costs. Bands make their money from touring- and the RIAA now wants a bigger piece of that pie too.
I am so very pleased with the committee's decision. We do MRI in our physics lab, and most of us have some relation to the University of Illinois at Urbana-Champaign. We are currently working on a new idea of Dr. Lauterbur (who is at UIUC) which should hopefully increase the signal to noise ratio of MRI when performed on very small samples. Translation- we are hoping to do better imaging on a micron to submicron scale of living cells, in addition to doing localized spectroscopy at the same scales. It just goes to show that even at 74, Dr. Lauterbur is a very important figure in the MRI field.
Side note- he was also a graduate of the Case Institute of Technology in Cleveland, Ohio, my alma mater (now Case Western Reserve University). Go Case!
This was an actual problem from the Univ. of Illinois Physical Qualification Exam. Given the characteristics of the atoms that make up a frog, you had to calculate the magnetic field necessary to levitate it (i.e. create a force that opposes the gravitational force). Do this in 45 minutes off the top of your head, and you will pass!
I'd say that is debatable. One of the greatest, yes, the greatest, no. I'd give that to Picasso, whose most famous periods of painting were almost exactly 100 years ago.
Lysergic Acid Diethylamide did not exist until 1938- most of Disney's best stuff predates this, or came just after it (think Fantasia, 1940). I am of the opinion that Disney's animators were definitely fungally-enhanced when they did Fantasia. Dancing mushrooms?
Man, when that worm hit, I was getting all this email on my hotmail account. Couldn't figure out WHY I was getting it; this explains everything! Thanks to the guy who submitted this article, really takes a load off of my mind.
What I'd like to know is how they were able to falsify their from address with legitimate emails? This is a direct result of spam- anytime I submit my hotmail account as my email address on web forms, I invariably will get spam as those companies sell my address. This is why I have the hotmail address- to keep my 'legit' accounts more or less spamfree. But even if I keep my legit accounts clean, the end result is still increased network traffic to my hotmail account, a direct result of spammers. Honestly, this is not just an annoyance problem now, it is starting to become an economic one too.
Here is something from www.toynbee.net, via the Google cache, that details how the tiles are made. Someone name Justin barely missed seeing the Mad Tiler himself.
Date: Wed, 03 May 2000 17:36:37 -0400
Subject: Toynbee Mystrey Solved!...(almost.)
Hello, my name is Justin K*H* and I am sending you this to let you know
of my research into the "Toynbee Idea" phenomenon. I have been
obsessively photographing & documenting these tiles since around
1992-'93, when I first started noticing them. I have a very extensive
collection of photographs, but this is not my reason for contacting you.
My reason in sending this E mail is to let you know that I have figured
out EXACTLY how these tiles are "made & glued". You see, sometime this
past winter I left my house on a mission to my lacal convinience store
for a late Sunday night snack (about 4:00 A.M.,so perhaps "early morning
snack would be more appropriate wording.) On my way back to the house I
noticed a black mound in the street which had made it's appearance there
sometime in the 10 minute period that I was in the store. Upon closer
inspection I discovered it to be a mound of tar paper, intermingled with
what appeared to be wood glue. Being the inquisitive soul that I am, I
lifted the top layer to see what may lay underneath----a "TOYNBEE IDEA"
TILE!!!!!( This was discovered at 12th. & Race ST. in Philadelphia, if
you want to add it to your sightings list.) Needless to say, I examined
the tile for quite a while, my heart racing all the while, knowing that
I had missed catching the "mad tiler" by only a matter of minutes. Here
are my findings - The tiles are indeed that - tiles. If you heat a
standard floor tile it will rubberize and become as easy to cut as
butter. But when it hardens it will not be able to withstand the
pressure afforded it by car tires as it will be too brittle (I have
tried making my own tiles, as you can infer.) However this tile was some
kind with a higher rubber content than a standard floor tile, and
therefore able to absorb greater weight and shock. It's inlayed letters
were of a slightly less malleable substance, but were held in place
neatly, even if they were to crack, by the white tile which surrounded
them. All of this intricate stencil-esque tile work appeared to have
been done with an X-acto knife or razor blade, judging by the angle of
the cuts and my own failed attempts with cutting letters into standard
floor tiles. The tile was sandwiched between thick layers of intricately
folded and glued together tar paper. The effects of the weather(the
paper decays, but the tar remains behind as an anchor to affix the tile
to the street) and passing cars(they serve as the force which squashes
the tile into - literally INTO - the street. Over the course of the next
few days I took a series of detailed photos which display the entire
process visually. I hope my explanation of all of this is
understandable, and I apologize for typos ( I am in a rush. ) Anyways,
I hope this gives you some sense of satisfaction as to at least HOW
these "plaques" are made.
P.S. I checked out that Philly adress from the Rio tile - no
luck, although I did find a SLEW of Toynbee tiles in the surrounding
South Philly neighborhood. (Rather unusual for the tiles to be seen in
such a residential neighborhood!) 9th. & Shunk St. is the only specific
one I can think of off the top of my head. There are three tiles there
which have to be seen to be believed. O.K......Put up my sightings &
mention my findings! Thank You,
Justin K*H*
Not quite. For purposes of MRI, we assume a more or less constant field, i.e. not changing direction or magnitude as a function of time or position. And yes, the force is orthogonal to the plane containing both the field and velocity vectors.
Yes I did mean Sin, sorry for the mental fart. It was like 5 AM. Also, it should be r^2, but for some reason,/. didn't like the way I typed in my "^2" with ASCII code, and it didn't show up.
How do you know it's sin? Because when theta is 0 degrees, you will reach a minimimum (i.e. the velocity and field vectors line up, so no force), and when it's 90, you get a max (i.e. they are perpendicular). Of course, we are also considering only constant fields and velocity that are not position-dependent.
BTW, I did a bit of quick internet research. I would say that 1GHz would be OK for biological samples- it is on the low end of the 'microwaves' (energy in an RF wave linearly increases with the frequency). Still, this is the same principle that reheats your food in your kitchen nuker.
There are already techniques using less magnetic field and higher RF pulses (these are different from MRI). Check out http://depts.washington.edu/ceeh/publication/Newsl etter/Newsletter9/fc6.htm for some info on Electron Spin Resonance (looks at electrons' spins instead of those of nuclei).
Well, that is a good try. The equation you have is one of the first taught in electroSTATICS. We are talking about electroDYNAMICS, ie moving charged particles, versus arrangements of particles that aren't moving.
In that case, the equivalent of Coulomb's Law becomes
F=q(E+v x B)
Here, F is force, q is the charge that is moving, E is the electric field (if present, you may remember something like E=kq/|r|, which is basically the force law you listed divided by a charge, giving units of Newtons/Coulomb), v is the velocity of the moving particle. All quantities in bold refer to vectors, so they not only have magnitude, but direction. In the case of the weber definition above, there is no electric field, so that part has no contribution. We are then left with:
F=q(v x B)
Here, the x does not just mean normal scalar multiplication but vector multiplication. All this means is to take into account the angles between the directions of the velocity and the magnetic field. Either way, the force will be perpendicular to both, so if you can imagine drawing lines indicating the velocity and magnetic field lying in a plane, the force the particle experiences points straight out of that plane. The more in line the velocity and field are (i.e. the smaller the angle they make relative to one another in that plane) than the smaller the force will be. If the particle is moving in the direction that the magnetic field points in, then it will experience no force- again, this is a result of the vector multiplication (better known as the cross product, where A x B=|A||B|Cos[theta], where theta is the angle between A and B.
Make sense? If you have questions, post them here.
This is a constant worry/annoyance to those of us that work with high-field magnets. I never can tell if my credit card is not working because the machine is flaky, or because I forgot to take my wallet out before I started working around the magnet. And you can't remagnetize the cards, which means you have to go get all new stuff.
On the bright side of things, this is a great way to circumvent those drivers license scanners bouncers use at bars to record who has stepped in to drink- a sign of Big Brother if you ask me. I think I will erase my drivers license's striope tomorrow...
No. They are very localized spatially. You would not be able to feel their effects until you got within about 20-30 meters (that is a complete eyeball estimate, probably need to get closer). The Earth's magnetic field, while smaller in magnitude, is not as localized, hence a compass will work pretty much anywhere (except for the poles, where it just spins wildly while you walk in circles waiting for the arctic wolves to devour you).
The magentic field in these magnets is very localized. They have tiny "bores", i.e. the area inside the magnet where there is actually high field. The earth on the other hand, has a much larger volume of magnetic field, even though it is smaller in magntiude.
So it is kind of a matter of concentration. Your keys aren't going to flying out of your pocket b/c these magnets get turned on, nor will they affect your compass because you are too far away from the space that they affect. The earth on the other hand will affect your compass, because you are in its (fields) area of affect.
MRI is all about pulses my friend. Good point. The reason for the pulses is not to protect the tissues- basically it is a timing issue that allows for nuclear spins to reach certain alignments which are favorable to making measurements that can lead to making an image, hence magnetic (the field) resonance (nuclear spin resonance of the hydrogen [most common] atoms in your sample), imaging (after data analysis of RF signals, you get a pretty picture).
BTW, at smaller scales, things work a bit differently- it is much easier to make powerful gradients over a small distance (say a few millimeters, or hundreds of microns) than it is over larger ones (say a human torso, or even a forearm). I wish I could be more specific about this, but my theory background on MRI is still a work in progress- I hope I didn't screw anything up in my post above. Any MRI geeks out there, feel free to correct or add anything I missed.
Slashdot Mirror
I think what he really meant is that is would be bad for Microsoft.
Well, history might tell us something. They didn't bow to the pressure of Microsoft when they came out with their Mac/GUI competitor, Windows, increasing the PC's viability and ease of use. But they didn't suddenly try to increase market share by allowing OEMs. Will things be different this time around if competition heats up?
W00T!!!
This is an excellent idea! It will boost tourism to North Africa, and hopefully spur further development and political stability in the North African nations, such as Morroco, Tunisia, Eretria, etc. Look at what the Chunnel has done for cross-traffic between England and France.
And be it that it may that you are only interested in music, many other people do have other interests. I use kazaa k++ for perfectly legitimate reasons, such as finding beta patches to games or looking for humerous video clips.
Why should people "just buy the factory CDs anyway"? Most of them are crap. They are a waste of money. The RIAA has screwed itself with its own corporate greed by constantly promoting artists that are without talent. If I want to show the artists that I enjoy what they do, I will go to a live performance. Most artists are not seeing any substantial income from their CD sales- that gets eaten up by the record companies for a bunch of bullshit fees and promotion costs. Bands make their money from touring- and the RIAA now wants a bigger piece of that pie too.
This is true (about the ash). Thanks for mentioning that. Someone should mod both parents posts up.
Nobels cannot be awarded after death.
Side note- he was also a graduate of the Case Institute of Technology in Cleveland, Ohio, my alma mater (now Case Western Reserve University). Go Case!
Pronounciation, yes, spelling, not necessarily.
Just out of curiousity, what would this super-old Swiss dude be doing in Romania?
This was an actual problem from the Univ. of Illinois Physical Qualification Exam. Given the characteristics of the atoms that make up a frog, you had to calculate the magnetic field necessary to levitate it (i.e. create a force that opposes the gravitational force). Do this in 45 minutes off the top of your head, and you will pass!
Space happens. Shit comes later.
Lysergic Acid Diethylamide did not exist until 1938- most of Disney's best stuff predates this, or came just after it (think Fantasia, 1940). I am of the opinion that Disney's animators were definitely fungally-enhanced when they did Fantasia. Dancing mushrooms?
What I'd like to know is how they were able to falsify their from address with legitimate emails? This is a direct result of spam- anytime I submit my hotmail account as my email address on web forms, I invariably will get spam as those companies sell my address. This is why I have the hotmail address- to keep my 'legit' accounts more or less spamfree. But even if I keep my legit accounts clean, the end result is still increased network traffic to my hotmail account, a direct result of spammers. Honestly, this is not just an annoyance problem now, it is starting to become an economic one too.
Let the modding down begin.
Date: Wed, 03 May 2000 17:36:37 -0400
Subject: Toynbee Mystrey Solved!...(almost.)
Hello, my name is Justin K*H* and I am sending you this to let you know of my research into the "Toynbee Idea" phenomenon. I have been obsessively photographing & documenting these tiles since around 1992-'93, when I first started noticing them. I have a very extensive collection of photographs, but this is not my reason for contacting you. My reason in sending this E mail is to let you know that I have figured out EXACTLY how these tiles are "made & glued". You see, sometime this past winter I left my house on a mission to my lacal convinience store for a late Sunday night snack (about 4:00 A.M.,so perhaps "early morning snack would be more appropriate wording.) On my way back to the house I noticed a black mound in the street which had made it's appearance there sometime in the 10 minute period that I was in the store. Upon closer inspection I discovered it to be a mound of tar paper, intermingled with what appeared to be wood glue. Being the inquisitive soul that I am, I lifted the top layer to see what may lay underneath----a "TOYNBEE IDEA" TILE!!!!!( This was discovered at 12th. & Race ST. in Philadelphia, if you want to add it to your sightings list.) Needless to say, I examined the tile for quite a while, my heart racing all the while, knowing that I had missed catching the "mad tiler" by only a matter of minutes. Here are my findings - The tiles are indeed that - tiles. If you heat a standard floor tile it will rubberize and become as easy to cut as butter. But when it hardens it will not be able to withstand the pressure afforded it by car tires as it will be too brittle (I have tried making my own tiles, as you can infer.) However this tile was some kind with a higher rubber content than a standard floor tile, and therefore able to absorb greater weight and shock. It's inlayed letters were of a slightly less malleable substance, but were held in place neatly, even if they were to crack, by the white tile which surrounded them. All of this intricate stencil-esque tile work appeared to have been done with an X-acto knife or razor blade, judging by the angle of the cuts and my own failed attempts with cutting letters into standard floor tiles. The tile was sandwiched between thick layers of intricately folded and glued together tar paper. The effects of the weather(the paper decays, but the tar remains behind as an anchor to affix the tile to the street) and passing cars(they serve as the force which squashes the tile into - literally INTO - the street. Over the course of the next few days I took a series of detailed photos which display the entire process visually. I hope my explanation of all of this is understandable, and I apologize for typos ( I am in a rush. ) Anyways, I hope this gives you some sense of satisfaction as to at least HOW these "plaques" are made.
P.S. I checked out that Philly adress from the Rio tile - no luck, although I did find a SLEW of Toynbee tiles in the surrounding South Philly neighborhood. (Rather unusual for the tiles to be seen in such a residential neighborhood!) 9th. & Shunk St. is the only specific one I can think of off the top of my head. There are three tiles there which have to be seen to be believed. O.K......Put up my sightings & mention my findings! Thank You, Justin K*H*
Not quite. For purposes of MRI, we assume a more or less constant field, i.e. not changing direction or magnitude as a function of time or position. And yes, the force is orthogonal to the plane containing both the field and velocity vectors.
How do you know it's sin? Because when theta is 0 degrees, you will reach a minimimum (i.e. the velocity and field vectors line up, so no force), and when it's 90, you get a max (i.e. they are perpendicular). Of course, we are also considering only constant fields and velocity that are not position-dependent.
BTW, I did a bit of quick internet research. I would say that 1GHz would be OK for biological samples- it is on the low end of the 'microwaves' (energy in an RF wave linearly increases with the frequency). Still, this is the same principle that reheats your food in your kitchen nuker. There are already techniques using less magnetic field and higher RF pulses (these are different from MRI). Check out http://depts.washington.edu/ceeh/publication/Newsl etter/Newsletter9/fc6.htm for some info on Electron Spin Resonance (looks at electrons' spins instead of those of nuclei).
In that case, the equivalent of Coulomb's Law becomes
F=q(E+v x B)
Here, F is force, q is the charge that is moving, E is the electric field (if present, you may remember something like E=kq/|r|, which is basically the force law you listed divided by a charge, giving units of Newtons/Coulomb), v is the velocity of the moving particle. All quantities in bold refer to vectors, so they not only have magnitude, but direction. In the case of the weber definition above, there is no electric field, so that part has no contribution. We are then left with:
F=q(v x B)
Here, the x does not just mean normal scalar multiplication but vector multiplication. All this means is to take into account the angles between the directions of the velocity and the magnetic field. Either way, the force will be perpendicular to both, so if you can imagine drawing lines indicating the velocity and magnetic field lying in a plane, the force the particle experiences points straight out of that plane. The more in line the velocity and field are (i.e. the smaller the angle they make relative to one another in that plane) than the smaller the force will be. If the particle is moving in the direction that the magnetic field points in, then it will experience no force- again, this is a result of the vector multiplication (better known as the cross product, where A x B=|A||B|Cos[theta], where theta is the angle between A and B.
Make sense? If you have questions, post them here.
On the bright side of things, this is a great way to circumvent those drivers license scanners bouncers use at bars to record who has stepped in to drink- a sign of Big Brother if you ask me. I think I will erase my drivers license's striope tomorrow...
Now if you were to inject a bunch of fine iron fillings, you might have a case, but you would also be very dead before the blood ever got sucked out.
No. They are very localized spatially. You would not be able to feel their effects until you got within about 20-30 meters (that is a complete eyeball estimate, probably need to get closer). The Earth's magnetic field, while smaller in magnitude, is not as localized, hence a compass will work pretty much anywhere (except for the poles, where it just spins wildly while you walk in circles waiting for the arctic wolves to devour you).
So it is kind of a matter of concentration. Your keys aren't going to flying out of your pocket b/c these magnets get turned on, nor will they affect your compass because you are too far away from the space that they affect. The earth on the other hand will affect your compass, because you are in its (fields) area of affect.
BTW, at smaller scales, things work a bit differently- it is much easier to make powerful gradients over a small distance (say a few millimeters, or hundreds of microns) than it is over larger ones (say a human torso, or even a forearm). I wish I could be more specific about this, but my theory background on MRI is still a work in progress- I hope I didn't screw anything up in my post above. Any MRI geeks out there, feel free to correct or add anything I missed.