Einstein and Lorentz

  • #1
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Main Question or Discussion Point

I am hoping someone can help me with something. I want to go into the field of temporal physics and I was wondering if someone could help me understand why Einstein's E=mc2 isn't combined with Lorentz's factor ϒ=1/√1-(v2/c2) to further prove the light-speed barrier?
 

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  • #2
Nugatory
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I was wondering if someone could help me understand why Einstein's E=mc2 isn't combined with Lorentz's factor ϒ=1/√1-(v2/c2) to further prove the light-speed barrier?
Both of these relationships are derived from the same underlying assumptions (the two postulates of special relativity - Google for "On the electrodynamics of moving bodies" to find Einstein's 1905 paper on SR) as the light-speed limit. Thus, using them to "further prove" the lightspeed limit doesn't tell us anything new; it just shows that the assumptions that lead to the light-speed limit lead to the light-speed limit.
 
  • #3
ChrisVer
Gold Member
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Also the relation [itex]E=mc^2[/itex] is already given at a certain Reference fram (the rest frame of the object of mass [itex]m[/itex] ). So how would you put a gamma factor?
 
  • #4
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T
Both of these relationships are derived from the same underlying assumptions (the two postulates of special relativity - Google for "On the electrodynamics of moving bodies" to find Einstein's 1905 paper on SR) as the light-speed limit. Thus, using them to "further prove" the lightspeed limit doesn't tell us anything new; it just shows that the assumptions that lead to the light-speed limit lead to the light-speed limit.
Thank you for the reference, Nugatory. Also, could you recomend any books or sights that are credited and discus the possibility of Tachyons?
 
  • #5
Khashishi
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Jorlack, you are right. One way of writing the energy equation is
##E=\gamma m c^2##
The common equation ##E=mc^2## is only valid for particles at rest, when ##\gamma = 1##.
 
  • #6
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Jorlack, you are right. One way of writing the energy equation is
##E=\gamma m c^2##
The common equation ##E=mc^2## is only valid for particles at rest, when ##\gamma = 1##.
##\gamma = 1## when the velocity of the said object or particle is 0. Therefore the Lorentz factor would equal ##1/1## or simply, 1.
 

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