MadSci Network: Physics
Query:

Re: How does a proper time of zero for light square with waves?

Date: Thu Sep 9 10:45:35 2004
Posted By: Jerrold Franklin, Professor Emeritus
Area of science: Physics
ID: 1094538951.Ph
Message:

I don't understand your first sentence.
"Proper time" is the time in the rest system of any observer.
Light has no rest system, so there is no "proper time" for a light wave.
(As a teenager, Einstein worried about how to go to the rest system for 
light.  With SR, he realized there is no rest system for light.)  
There is a mistake in your framing.


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