Asked by stephan
Why do light(photons) have no mass
Answers
Answered by
Damon
Their rest mass has to be zero or it would be infinite at their speed, which of course is the speed of light :)
mass = rest mass/sqrt(1-beta^2)
where beta = v/c
if v is c, then the denominator approaches zero and if there is finite rest mass the fraction --->oo
mass = rest mass/sqrt(1-beta^2)
where beta = v/c
if v is c, then the denominator approaches zero and if there is finite rest mass the fraction --->oo
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