[Laser] Photons?

[Terry Morris W5TDM]

Yep, sometimes Wikipedia is not to bad an information source.

Terry


>From: "KD7JYK" <kd7jyk at earthlink.net>
>Reply-To: Free Space LASER Communications <laser at mailman.qth.net>
>To: "Free Space LASER Communications" <laser at mailman.qth.net>
>Subject: Re: [Laser] Photons?
>Date: Wed, 22 Aug 2007 00:21:18 -0700
>
>Found my answer, no reference to Radons, Feelons, Smellons...  Interesting
>stuff though!
>
>In modern physics the photon is the elementary particle responsible for
>electromagnetic phenomena. It is the carrier of electromagnetic radiation 
>of
>all wavelengths, including gamma rays, X-rays, ultraviolet light, visible
>light, infrared light, microwaves, and radio waves. The photon differs from
>many other elementary particles, such as the electron and the quark, in 
>that
>it has zero rest mass;[3] therefore, it travels (in vacuum) at the speed of
>light, c. Like all quanta, the photon has both wave and particle properties
>("wave-particle duality"). As a wave, a single photon is distributed over
>space and shows wave-like phenomena, such as refraction by a lens and
>destructive interference when reflected waves cancel each other out;
>however, as a particle, it can only interact with matter by transferring 
>the
>amount of energy
>
>Kurt
>
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