Re: [Phys-l] radio vs. light

[jmarx@mcdaniel.edu]

> In the July Scientific American there is an article about using light for
> local wifi instead of radio. On p. 84 there is a sidebar comparing the two
> media, including several interesting statements:
> High transfer rates for radio depend on dangerously high power levels.
> Radio signals interfere with each other but photons do not.
> Out of phase radio waves can cancel each other out, but "destructive
> interference is impossible with light."
> I think this article would be a good discussion starter for my modern
> physics or waves course.
> Skip
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