Recent content by Adonis

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    Graduate Negative energy in Dirac theory

    it is true depending on Feynman's explanation of negative energy. http://en.wikipedia.org/wiki/Antiparticle
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    Stargazing Which are the top telescope producers

    i recommend you to visit this: www.findascope.com
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    Get PhysicsForums Email | Sign Up Now

    good idea.. i will make my own one
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    Undergrad What are the magnetic effects on electrons described by equations?

    what is the effect of a magnetic field on a electron? please with equations
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    Graduate Could Neutrinos Be the Key to Understanding Dark Matter?

    what i meant it that the dark matter has a gravitational effect on light... not electromagnetic effect...(by stimulating electrons if electrons exist in dark matter) just like when a light beam passes near to a star or his path will be curved for a little...so what can we say about a galaxy...
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    Graduate Could Neutrinos Be the Key to Understanding Dark Matter?

    Astrophyiscs measured gravitational effect of dark matter surround the galaxies right? as the gravitational lenses
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    Graduate Could Neutrinos Be the Key to Understanding Dark Matter?

    dark matte is a form of ordinary matter as u said ,,,,just interact gravitational forces right?
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    General Relativity and Quantum field theory

    there's a lot of physics students in Syria havnt ever heard about General Relativity and Quantum Mecanis Applications... just a few peple are intersted in QT and GR in Syria in fact...most physicians after the graduate are teaching physics for students in schools... Unfortunately, physical...
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    Graduate Uniting quantum physics with the theory of relativity

    (at first sorry for my bad english) in GR and SR we can easlily measure the position,velocity mass,... of a body in a 4 dimensional place called spacetime and as we know that the large bodies curved the spacetime by gravitational waves, and these waves composed from gravitons and we can...
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    High School Best Telescope: Refractor vs Reflector

    i know this i got to ask you about magnification: a telescope magnification is 36x-675x what is the measure of magnification?? meters? and what's the meaning of "Brightness" in telescopes?
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    High School Best Telescope: Refractor vs Reflector

    thank you all for your infos but I am not asking about the money... ...asking about what is difference between the principle of refractor/ reflector telescopes and what to recomend
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    High School Best Telescope: Refractor vs Reflector

    what is the best telescope? refractor or reflector? is the principle of reflecting is better or the reflacting?
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    High School Time & Temperature: Any Connection?

    time will be slowed near to the large bodies in space (stars, black holes, neutron stars) cause of curved spacetime i don't think there`s there`s a relation between temperature and slowed time temperature form of energy...and bodies another form, but temperature not matter...
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    Graduate The constancy of the energy of the universe?

    is anyone conisder the dark matter & dark energy? what i mean: is the dark matter & dark energy have constant energy(potential+kinetic)? or not?
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    Graduate Accelerating universe = conservation of energy?

    well classick physics say the energy of the universe is balanced... cause when energy turns of a form to another it will stay energy (potential or kinetic or...) so...we cansay KE+U= constant btw the universe is limited but with no boundaries (by GR)