2 ms·
Light does have relativistic mass but it is insufficient to account for dark matter.
by qtplatypus 7y ago
Light does have relativistic mass but it is insufficient to account for dark matter.
- evanb 7y agoLight does not have relativistic mass, but it does carry energy. The full version of Einstein's famous equation is E^2 = m^2c^4 + p^2c^2; a photon has m=0, so E=pc.