
#19
Feb913, 04:13 PM

Mentor
P: 15,613

Let me repeat: 



#20
Feb1013, 06:08 AM

P: 83

Einstein's most famous equation is E=mc^2. It means that energy and mass are different forms of the same thing. http://simple.wikipedia.org/wiki/Albert_Einstein Another reason : Matter and Antimatter annihilation is an example of converting energy in one form (electrons and positrons) into another (highenergy photons) . Or A photon it's a packet of energy can pairproduce to make an electron and a positron too . The language of physics is mathematics Think of what Work is . Work is when a force causes displacement of a body . we can translate this definition to mathematics with the equation w=fd Photons are packets of energy Your equation is E^{2} = m^{2}c^{4}+p^{2}c^{2}. For a photon the rest mass term vanishes, and you get E=pc. So energy and Momentum are related by a constant ( related by the invariant speed of light). See the Pythagorean relationship between Energy (E), Mass (m) and Momentum (p) . for example : I have a 100 amperes , and measure its resistor and the voltage across it Is that mean R and V are same thing ? no . But in equation e=mc^2 we just have a constant and it's speed of light . Hope you understand . 



#21
Feb1013, 06:24 AM

Mentor
P: 28,804

So, when you created this thread, were you asking a question to learn, or was your intention to enlighten people on what you think you know?
Zz. 



#22
Feb1013, 09:33 AM

PF Gold
P: 11,046

Sorry Big Bounce, but you are quite simply, wrong. It's clear that you do not wish to learn anything, but to argue, therefore I will leave this thread now. Have a nice day.




#23
Feb1013, 02:06 PM

P: 5,634




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