In article <sib-0809941303350001 at biomed-jww-245.biomed.brown.edu> sib at brown.edu (Sam Beale) writes:
>In article <f_holleyg-080994084705 at holley.sfasu.edu>,
>> Does a photon have mass or is it just an energy wave?
>>No mass, all energy. They travel at the speed of light. This alone
>disqualifies them from having mass. Said another way, if they had mass
>and travelled at the speed of light, they would have infinite energy.
>Consult any physics book.
But they DO have momentum. Again, consult a physics book :-)
Robin Walters. Robert Hill Institute, Sheffield UK.
A fact is an opinion that everyone agrees with.
