Can we fit all the photons in the universe on the head of a pin?

Subject: Can we fit all the photons in the universe on the head of a pin?

Date: Thu Mar 22 16:41:08 2001
Posted by Dick Mills
Grade level: grad (non-science) School: No school entered.
City: West Charlton State/Province: NY Country: USA
Area of science: Physics
ID: 985297268.Ph

Message:


I read that we can put an unlimited number of signals into a single glass 
fiber, separated by frequency, because photons don't interact with each other.

I wonder if there isn't some upper limit.  Are there relativistic effects?  
Would we create a black hole?

Re: Can we fit all the photons in the universe on the head of a pin?

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