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historic

Question asked by seeker on Jan 2, 2010
Latest reply on Jan 12, 2010 by mkelly
I hope this question is best posted here; I looked at each forum and judged it the best.

Somewhere between Newton and Fraunhoffer (I guess), "wavelengths" were assigned to the spectrum.

Who is the real "first person" to do this, and how exactly was it done?  I read all that I could find, but there doesn't seem to be a clear answer.

Thanks in advance!  

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