Physics by Valmis
“The true sign of intelligence is not knowledge but imagination.”

Albert Einstein
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Athens, Greece, Est.2008
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Quantum gas microscope offers glimpse of quirky ultracold atoms
4 Nov 2009, 12:07 pm
Materials scientists find better model for glass creation
4 Nov 2009, 11:35 am
Capturing those in-between moments: Researchers solves timing problem in molecular modeling
4 Nov 2009, 8:09 am
Tiny Music Player Made from Wire Bridge (w/ Video)
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Compressing photonic signals for greater bandwidth
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Kelly Martin

Kelly Martin I nominated this page in the "most educational to follow" category on mashamable's 2009 open web awards. Click here if you wish to vote for Physics for Valmis in this category. :]

http://mashable.com/owa/votes?v=Physics%20by%20Valmis%20%28on%20facebook%29&c=5

Vedat Uğurlu
Annie
Miguel

Miguel
Symmetry Rules - How Science and Nature are founded on Symmetry
Joe Rosen, 2008 - The Frontiers Collection, Springer
http://www.ciberdigital.net/books/Symmetry_Rules_-_How_Science_and_Nature_Are_Founded_on_Symmetry_(Rosen_Springer).pdf

The purpose of this book is to show that science – even in its broad conception – not o...nly makes much use of symmetry, but is essentially and fundamentally based on symmetry. Indeed, science rests firmly on the triple foundation of reproducibility, predictability, and reduction, all of which are symmetries, with additional support from analogy and objectivity, which are symmetries too. So it is not much of an exaggeration to claim that science is symmetry. Or perhaps in somewhat more detail, science is our view of nature through symmetry spectacles. [...] In addition to an exposition and justification of this central idea, that science is founded on symmetry, the author also looks into how symmetry is used in science in general and in physics in particular (Rutherford’s ‘real science’). And we find: symmetry of evolution (symmetry of the laws of nature), symmetry of states of physical systems, gauge symmetry of the fundamental interactions, and the symmetry inherent to quantum theory. So not only do we view nature through symmetry spectacles, but we understand nature in the language of symmetry. [...] All that leads to deep questions that await clarification. What is the source of all this symmetry? What is nature telling us? Is nature symmetry, at least in some sense? If not at the level that physics is presently investigating, are deeper levels of reality involved with symmetry in a very major way? Or even, will symmetry turn out to be what those fundamental levels are all about? Is symmetry the foundational principle of the Universe?Read More

Miguel

Miguel Want to take a peek at what happens (almost live!) at the Atlas detector at CERN?
http://atlas-live.cern.ch/latest?triggerStream=Default

Roman Volkovsky

Roman Volkovsky How do you explain the fact that when you pour hot water it makes a different sound then when you pour cool or cold water?! Something to do with partical movement due to temperature i suppose.. but really, any ideas?

Sat at 12:10pm · Report
Topher Maurer
Topher Maurer
I would suppose that it has to do with the way that sound waves travel due to temperature. The air right around and in a cup that hot water is being poured into is heated up much more so than the way that the air is when you pour cold water into a cup or dish. If you were pouring the hot water into a tall cup then it would theoretically heat the ... Read Moreinside of the cup up and the sound waves would travel at different speeds than they would inside of a cold cup.

Anyone else have anything to add, explain better? lol
3 hours ago
Eric Orton

Eric Orton With the developpement of super-cavitating torpedoes capable of velocities up to 800 km/h, is it actually possible to break the sound barrier under water?

Fri at 12:43pm · Report
Brett Diamond
Brett Diamond
That's kinda like the thinking they had about Chuck Yeager hitting a wall in the sky. I think it would definately produce a sonic boom, yes. There is no limit to speed. It is a physics fact we are still believeing in that is limiting our thinking. Like Columbus thinking the world was flat. Everything depends upon location, medium, factors of travel and path, opposing forces. And everything is in constant change and motion.
Sat at 4:20pm
Brett Diamond
Brett Diamond
....and just to give you a ballpark reference for this discussion.......sound will travel in water over 3000 mph, give or take, depending on temperature, density ( depth ). So until we invent something that can travel at that speed under water......generally the factor used to compute is that sound travels 4.3 times faster in a liquid, at 20 degrees C. So do the math. There are formulas to compute the speed as the factors change.
Sat at 4:35pm
Omar E Silva

Omar E Silva All-Sky Milky Way Panorama 2.0 by: Axel Mellinger's

http://home.arcor.de/axel.mellinger/

November 4 at 6:08pm · Report
Physics by Valmis
Physics by Valmis
Excellent image!
"more than 3000 individual CCD frames"
November 4 at 10:04pm
Nirdosh Chapagain
Nirdosh Chapagain
cool images ..thanks!!
November 5 at 3:32pm
Rondelle

Rondelle I did a latent heat of fusion of ice lab and i got 3.21 x 10^7 J/kg is this correct?

November 4 at 10:45am · Report
Rondelle
Rondelle
thanks
November 5 at 8:42pm
Michael Herschman

Michael Herschman New rocket car being designed to reach 1609 km/h ---> http://news.bbc.co.uk/2/hi/science/nature/8343063.stm

RECENT ACTIVITY
Physics by Valmis discussed Destroying the Earth on the Physics by Valmis discussion board.
Physics by Valmis discussed need your help!!! on the Physics by Valmis discussion board.
Tommy Andri Palembangan

Tommy Andri Palembangan need your help, I'm looking for Journal of Oil-Drops Milikan, Absorption of Gamma Rays, Photo-Electric Effect, Near-Field Diffraction, Interferometer Michelson, E/m, please help me, I have a difficulty for downloading that Journal, if you have that Journal, please contack me, thx b4

November 3 at 9:45pm · Report
Topher Maurer
Topher Maurer
Is that for your Modern class? Sounds like nearly the same thing we had for my Modern lab.
November 4 at 12:13pm
Gaurav Biswas

Gaurav Biswas disprove e=mc^2
MEIN NEWTON KA BAAP HOON..

November 3 at 7:42pm · Report
Ahmd Elshazly
Ahmd Elshazly
i'm the first stimulator
November 5 at 1:24pm