| Name | Expertise | Status |
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Philip A. Stahl
U.S.
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| I specialize in stellar and solar astrophysics. Can answer any questions pertaining to these areas, the spectroscopic analysis of stars – as well as the magneto-hydrodynamics of sunspots and solar flares. Sorry – No homework problems done or research projects! I will provide hints on solutions. | Available
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Steve Nelson
U.S.
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| Fusion, solar flares, cosmic rays, radiation in space, and stellar physics questions. Generally, nuclear-related astrophysics, but I can usually point you in the right direction if it's not nuclear-related. | Available
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Faraz Nizamani
Pakistan
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| I can't answer questions from Quantum Electrodynamics, and Field Theories, rest I can answer questions ranging from Newtonian mechanics to modern physics, and almost anything under Astrophysics. | Available
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| VOLUNTEER TO BE AN EXPERT IN THIS CATEGORY |
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2008-07-31 speed of light: Neither. Relativity determines that nothing with mass can accelerate to the speed of light because it would require infinite energy. However, particles that are created with velocities which are faster...
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2008-07-31 speed of light: Hello, In his paper, 'Does the Inertia of a Body Depend on its Energy Content? (in Annalen der Physik, Vol. 17, 1905) Einstein basically showed that as a mass approaches the speed of light, its inertia...
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2008-07-16 magnetic poles: Yes and no. In that you don't need an external magnetic field to move the magnet, you can use the magnet's field to exert force on a wire. You can also use a Hall probe (current flowing through a piece...
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2008-07-10 termo: Yes we can, and some devices and spacecraft are powered this way already. However, the efficiency is terribly low, only about 5-10%. See this article on thermogenerators: http://en.wikipedia.org/wiki/Thermogenerator...
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2008-07-03 White holes -- my favorite astronomical object: White holes are a mathematical solution to Einstein's field equations involving no matter, hence there is nothing to make a singularity in the first place. http://curious.astro.cornell.edu/question.php?number=108...
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