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Wavelength of He-Ne laser
From
: Larry Smith <
Larry.Smith@snow.edu
>
Date
: Tue, 13 May 1997 15:04:26 -0600
Sorry if this is a stupid question, but the textbooks all say the
wavelength of He-Ne lasers is 632.8 nm; so why does my little $25 laser
pointer I carry to lecture say its wavelength is 670 nm?
Thanks in advance,
Larry
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