How do i convert ?

  • Thread starter gunblaze
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I was reading a book on the theory of relativity yesterday and it said that by substituting the equation for momentum (p=mv) in to the formula E^2=m^2c^4+p^2c^2..
i will be able to get this E=gamma mc^2..
I was just wondering where they get the "gamma" from? :confused: can anyone pls tell me how they get that? Thx
sry, not really good at this. :cry:
 

Pengwuino

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gamme is equal to 1 over the square root of 1-((v^2)/(c^2))
 

dextercioby

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You need to be careful with the notation.

[tex] E^{2}=m^{2}c^{4}+p^{2}c^{2} [/tex]

and [tex] p=\gamma m v [/tex].

Daniel.
 
186
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dextercioby said:
[tex] p=\gamma m v [/tex].
Isn't momentum=mass x velocity?
 

Pengwuino

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gunblaze said:
But isn't momentum=mass x velocity?
Not in relativistic physics. Its gamma * mass * velocity as v -> c
 
186
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erm.. can we put velocity, v, and speed of light, c, together?
eg: [tex] v^{2}c^{2}=c^{4} [/tex]
 
Last edited:
186
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but it sounds ridiculous rite? how can the velocity be equal to the speed of light?
 
186
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k.. guys, i get it alr..thx thx so much!
 

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