Ok - tell me this, is the heat energy produced by iron sinking to the center of the earth also solar energy, or might it be a conversion of gravitational potential energy. How 'bout the energy of the earth's, or other galactic magnetic fields. And lastly, if as you say everything is energy from stars, explain the energy of the universe before there were stars. Can you say cosmic background radiation? There are others non-star derived energy source as well, but I hope the point has been made.
To think my original intention was to post regarding the incorrect capitalization of "Caltech", which is missed be most non-techers.
It does not matter who funded the studies
Actually, Nature requires that you disclose financial interest when you publish. http://www.nature.com/nature/authors/policy/compet ing.html/
Including:
"Funding: Research support (including salaries, equipment, supplies, reimbursement for attending symposia, and other expenses) by organizations that may gain or lose financially through publication of the paper."
In reading the article, he is measuring airspeed, you could trim pitch using airspeed alone. I think he also had in flight #2 acccelerometers - now you can calculate what in the soaring community is know as total-energy - in a sailplane pushing the stick forward makes it seem like you are loosing altitude (you are) but you are convrting it to kinetic energy so you can gain it back by pulling back on the stick. The sink rate of the air around you needs to be cacculated using both airspeed and vertical acceleration.
Retrospect seems to do somthing similar. On 10.3.5/Library/StartupItems is drwxrwxr-w root:admin. Seems likely Dantz did this as I only have startup items from them.
What experiance do we have with stuff smaller than dust? I would guess that before we had experience with asbetosis, or the coal miner's black-lung (carbon by the way) we might have ignored it as having no possible effect. Opps - didn't read your last sentence - yes it may be a problem. Are we not scientists? Do we not believe in actual data? Experimentalists of the world unite!
many posters seem to think that the irritation/allergy issue has only to do with chemical composition. You have to consider the mechanics as well. For example - sand size silicon is no problem - we walk beaches covered in the stuff, we have sand storms where the air is full of it, but we also have noses and lungs evolved to filter the stuff. When you get to micron sized particles, it can be the size as much as the composition that is relevant. See Link Consider asbestos. Not a problem when incorporated in insulation. In fact you can touch it and eat it no problem. The problem is that asbestos tends to make the wrong size particles that can penetrate the lungs. So the physical size of the particle is more important than it's chemical composition. Hope this is not too deep (in the lungs) for the non-allergy/chicken-little people to comprehend. What do you think coal miners get? Coal is carbon afterall.
Two important pneumoconioses are coal worker's pneumoconiosis and silicosis.
Not that I would complain about a G5 powerbook, but G4 gets you 4 Gig addressable RAM and something like 90% the altivec speed of G5 IIRC.
In all seriousnesss, what does the G5 get you for a notebook that the G4 does not?
Thinkfish produced a realtime artistic rendering engine ( PC and Mac ) around '97. The drawings generated ranged from charcoal, pen & ink, watercolor, over 30 styles. I was one of the engineers on the project. We did a plug in for SGI Cosmo Worlds, and Painter3D, as well as Archicad. My personal favorite was being able to render a charcoal drawing style walkthrough with QuicktimeVR. Looked very much like the A-HA "Take On Me" music video circa '85. see LiveArt IMHO - I've yet to see it done better - especially considering we did it realtime.
What I was trying to suggest regarding the parent comment If you have any process which can generate enough hydrogen cheaply enough... is that if we had such a process we could use the hydrogen directly in the generator. I don't think we are talking about mobile uses like fuel cells or burning in cars here - we are talking very large generator. So instead of burning O2 + Hx-Cy -> H2O + CO2 we would just leave the C out of the cycle in the first place. You will note that the generator design burns methane, which I think is typically transported in the gas phase ( not counting ocean going tankers ) in pipes, so H would be the same.
The irony was intended to be infered, especially since most H generation methods start with an HC...it's a bit recursive of a suggestion. It's almost like saying we can just get the H from H2O in which case you have an entropy problem.
As for fixing the C, it needs to be in mineral for to satisfy my long term concerns.
I
Politzer was a terrific lecturer ('85). And one of the most approchable physicists at Tech. I remember my Ph12 TA (Randy Kamien) saying this work was likely to get him the Nobel!
Shout out to Kip and Charlie, and RIP to Gomez.
It's not an earth size planet - but this is prettty cool.
BBC News - link
"The historic first image of a planet circling another star may have been taken by the Hubble Space Telescope."
Yes, it was done in 3-D because that was the easiest way at the time. As you point out yourself, one could walk in a straigt line around the earth and arive in the same place. The conclusion would then be that the earth is finite, and curved. So even without an external perspective it could be done. This is why we are making these measurments of the universe, as we don't seem to have an external perspective available. So we don't know the answer at present. We are simply looking for a self consistent explaination. I haven't read Flatland in some time so I do not remember the tools you refer to, but all you would need to do to walk in a straight line in 2-D is to leave a point where you start, walk some distance, leave another point, and then again walk some distance and align the two points you had already left behind, and repeate. No need to stand up perpendicular to your existence. What surprise when you eventually return to your first point.
I still have my Apple II+ and wanted to see if I could recover the source code to Repton - a game I co-authored back in '82. The end result was that I wired up a cable from the Apple II printer card to my Linux parallel port and wrote some C code that made the Linux box look like a printer to the Apple II card. Since I could not get Merlin ( the apple II assembler ) to boot I also had to write a BASIC program that would read the binary files directly from floppy and send the text out the printer port.
Some day I may try to get the code to actually compile so I can run the game on my Nokia - but I'd have to mess around with getting the graphics files over as well if I want to build the game.
Amazing to me that 25 year old floppy disks - and all the hardware still work - including my Amdek Color monitor. As best I can tell, only the 16K expansion card has problems, and that might be fixed if I could find a 4116 (?) 16Kx1 chip or two.
Apple RULES!!!
My old $100 Epson claims 2800dpi - that 1/2 a thousandth of an inch, and I'm guessing it is repeatable at the 720dpi resolution which is almost 1/1000 in. So thousandths is not extreme at all.
Slashdot Mirror
Ok - tell me this, is the heat energy produced by iron sinking to the center of the earth also solar energy, or might it be a conversion of gravitational potential energy. How 'bout the energy of the earth's, or other galactic magnetic fields. And lastly, if as you say everything is energy from stars, explain the energy of the universe before there were stars. Can you say cosmic background radiation? There are others non-star derived energy source as well, but I hope the point has been made.
To think my original intention was to post regarding the incorrect capitalization of "Caltech", which is missed be most non-techers.
Sol is our sun, not all suns.
Evreything is indirectly solar power.
you forget radio nuclide decay heat...currently estimated to be about 1/2 of the heat in the earth.
It does not matter who funded the studiest ing.html/
Including:
"Funding: Research support (including salaries, equipment, supplies, reimbursement for attending symposia, and other expenses) by organizations that may gain or lose financially through publication of the paper."
Actually, Nature requires that you disclose financial interest when you publish. http://www.nature.com/nature/authors/policy/compe
foo exist because bar has become too complex for people to bletch themselves
[foo, bar, bletch]
lawyers, the law, represent
programmers, computers, program
mechanics, cars, repair
doctors, medicine, practice
lawyers are professionals - one of the older professions. professionals work to get paid in most cases.
In reading the article, he is measuring airspeed, you could trim pitch using airspeed alone. I think he also had in flight #2 acccelerometers - now you can calculate what in the soaring community is know as total-energy - in a sailplane pushing the stick forward makes it seem like you are loosing altitude (you are) but you are convrting it to kinetic energy so you can gain it back by pulling back on the stick. The sink rate of the air around you needs to be cacculated using both airspeed and vertical acceleration.
This is even noted as a problem: SecurityFocus
Retrospect seems to do somthing similar. On 10.3.5 /Library/StartupItems is drwxrwxr-w root:admin. Seems likely Dantz did this as I only have startup items from them.
What experiance do we have with stuff smaller than dust? I would guess that before we had experience with asbetosis, or the coal miner's black-lung (carbon by the way) we might have ignored it as having no possible effect.
Opps - didn't read your last sentence - yes it may be a problem. Are we not scientists? Do we not believe in actual data?
Experimentalists of the world unite!
many posters seem to think that the irritation/allergy issue has only to do with chemical composition. You have to consider the mechanics as well. For example - sand size silicon is no problem - we walk beaches covered in the stuff, we have sand storms where the air is full of it, but we also have noses and lungs evolved to filter the stuff. When you get to micron sized particles, it can be the size as much as the composition that is relevant. See Link
Consider asbestos. Not a problem when incorporated in insulation. In fact you can touch it and eat it no problem. The problem is that asbestos tends to make the wrong size particles that can penetrate the lungs. So the physical size of the particle is more important than it's chemical composition.
Hope this is not too deep (in the lungs) for the non-allergy/chicken-little people to comprehend. What do you think coal miners get? Coal is carbon afterall. Two important pneumoconioses are coal worker's pneumoconiosis and silicosis.
Not that I would complain about a G5 powerbook, but G4 gets you 4 Gig addressable RAM and something like 90% the altivec speed of G5 IIRC. In all seriousnesss, what does the G5 get you for a notebook that the G4 does not?
Thinkfish produced a realtime artistic rendering engine ( PC and Mac ) around '97. The drawings generated ranged from charcoal, pen & ink, watercolor, over 30 styles. I was one of the engineers on the project. We did a plug in for SGI Cosmo Worlds, and Painter3D, as well as Archicad. My personal favorite was being able to render a charcoal drawing style walkthrough with QuicktimeVR. Looked very much like the A-HA "Take On Me" music video circa '85.
see LiveArt IMHO - I've yet to see it done better - especially considering we did it realtime.
What I was trying to suggest regarding the parent comment If you have any process which can generate enough hydrogen cheaply enough... is that if we had such a process we could use the hydrogen directly in the generator. I don't think we are talking about mobile uses like fuel cells or burning in cars here - we are talking very large generator. So instead of burning O2 + Hx-Cy -> H2O + CO2 we would just leave the C out of the cycle in the first place. You will note that the generator design burns methane, which I think is typically transported in the gas phase ( not counting ocean going tankers ) in pipes, so H would be the same. The irony was intended to be infered, especially since most H generation methods start with an HC...it's a bit recursive of a suggestion. It's almost like saying we can just get the H from H2O in which case you have an entropy problem. As for fixing the C, it needs to be in mineral for to satisfy my long term concerns. I
If you have H, then you don't need to burn a carbon based fuel to begin with.
Politzer was a terrific lecturer ('85). And one of the most approchable physicists at Tech. I remember my Ph12 TA (Randy Kamien) saying this work was likely to get him the Nobel!
Shout out to Kip and Charlie, and RIP to Gomez.
It's not an earth size planet - but this is prettty cool. BBC News - link "The historic first image of a planet circling another star may have been taken by the Hubble Space Telescope."
Yes, it was done in 3-D because that was the easiest way at the time. As you point out yourself, one could walk in a straigt line around the earth and arive in the same place. The conclusion would then be that the earth is finite, and curved. So even without an external perspective it could be done. This is why we are making these measurments of the universe, as we don't seem to have an external perspective available. So we don't know the answer at present. We are simply looking for a self consistent explaination.
I haven't read Flatland in some time so I do not remember the tools you refer to, but all you would need to do to walk in a straight line in 2-D is to leave a point where you start, walk some distance, leave another point, and then again walk some distance and align the two points you had already left behind, and repeate. No need to stand up perpendicular to your existence. What surprise when you eventually return to your first point.
>Let the number of possible outputs of c_x be n Well, if n is a 32 bit number you need 4 billion computers working on c_x.
I still have my Apple II+ and wanted to see if I could recover the source code to Repton - a game I co-authored back in '82. The end result was that I wired up a cable from the Apple II printer card to my Linux parallel port and wrote some C code that made the Linux box look like a printer to the Apple II card. Since I could not get Merlin ( the apple II assembler ) to boot I also had to write a BASIC program that would read the binary files directly from floppy and send the text out the printer port.
Some day I may try to get the code to actually compile so I can run the game on my Nokia - but I'd have to mess around with getting the graphics files over as well if I want to build the game.
Amazing to me that 25 year old floppy disks - and all the hardware still work - including my Amdek Color monitor. As best I can tell, only the 16K expansion card has problems, and that might be fixed if I could find a 4116 (?) 16Kx1 chip or two.
Apple RULES!!!
My old $100 Epson claims 2800dpi - that 1/2 a thousandth of an inch, and I'm guessing it is repeatable at the 720dpi resolution which is almost 1/1000 in. So thousandths is not extreme at all.