What's Light



When Paul Dirac, the physicist who predicted the existence of antimatter, was asked what an electron is, he said:

"Electron, hmmm, Here, this is an electron," and he wrote

on the blackboard . "This function , this is an electron," Dirac added.

I answer the question of what light is in the same fashion,

In a non-quantum world, light is

In a quantum world, light is

What do these equations mean? Please proceed to the next stop on your light tour.



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Last updated: June 18, 1999 AP