What is the relative speed of two photons passing each other?

Subject: What is the relative speed of two photons passing each other?

Date: Fri Feb 22 02:58:34 2002
Posted by Gareth
Grade level: nonaligned School: of Life
City: Worcester State/Province: Worcestershire Country: Britain
Area of science: Physics
ID: 1014364714.Ph

Message:


Two photons in a vacuum pass each other in opposite directions. What is their 
speed relative to each other? Since Light always travels at the speed of light 
presumably the answer is double the speed of light - which we are told cannot 
be so. Please - how and why!

Re: What is the relative speed of two photons passing each other?

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