Light from a massless vehicle

imageIf a massless vehicle was traveling at the speed of light and a light source was emitted from the vehicle would there be a visible beam of light?

 
 

Answer. Posted on Tuesday, March 3, 2015.

The massless vehicle could emit a photon visible to the human eye. In order to conserve energy and momentum it is possible in the direction the vehicle was travelling. It is important to mention that the energy of the vehicle would have be larger than the energy of the emitted photon.

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