- #36
JesseM
Science Advisor
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- 16
You can, but just not if you use an inertial coordinate system.atyy said:Yes, it is interesting why we cannot set the speed of light to be zero
Not without changing the definition of speed, which is normally defined as the norm of the velocity vector (and the norm of a vector is positive)atyy said:You can certainly take the speed of light to be negative, as long as you interchange all positives and negatives in your equations.