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Baez: Things that

#
Michael Weiss: A Trivial Exercise

Here's what ought to be a trivial exercise. Say we have a monochromatic
beam of light, photon density *N* photons per square meter per second,
angular frequency *w*. [Pronounce that *w* as if it was spelled
*omega*.] Well, this is also a plane electromagnetic wave with
amplitude *A* and angular frequency *w*. Ought to be possible
just using dimensional analysis to figure out the relationship of *A*
to *N* and vice versa.
Last time I tried that, I didn't get what I expected...

*Michael Weiss*

*3/10/1998*