A question about light

  • #1

Main Question or Discussion Point

i'm wondering something... does light have any mass?
 

Answers and Replies

  • #2
mathman
Science Advisor
7,720
401
Light has no rest mass. However, it has energy and is affected by gravity as if it had mass.
 
  • #3
74
0
Light also has momnetum. Its affected by gravity due to the curvature of space time that masses produce.
 

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