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From: grl@charm.UUCP (George Lake)
Newsgroups: net.physics
Subject: Re: Limit to the frequency of light?
Message-ID: <674@charm.UUCP>
Date: Mon, 3-Jun-85 09:45:04 EDT
Article-I.D.: charm.674
Posted: Mon Jun  3 09:45:04 1985
Date-Received: Tue, 4-Jun-85 06:19:47 EDT
References: <19900003@hpfcla.UUCP>
Organization: Physics Research @ AT&T Bell Labs Murray Hill NJ
Lines: 9

The shortest frequency that light can have is roughly
10^43 Hz.  This is one oscillation per Planck time.
A photon has an energy, E = h*nu. h is Planck's constant
and nu is the frequency.  It's wavelength is nu * c, the spee
of light.  It's equivalent mass, M = E/c/c.  It's Schwarzschild
radius in G*M/c/c, where G is Newton's constant.  Get out
your handy list of constants and solve for a photon whose
wavelength lies inside its Schwarzschild radius.  Gravity
swallowed it !