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Topic: wavelengths  (Read 3663 times)

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KeLlI

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wavelengths
« on: October 28, 2004, 09:27:34 PM »
the line spectrum of litjium has a red line at 670.8nm. calculate the energy of a photon with this wavelength.please explain how to do this problem. i have no idea how to do it!
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ssssss

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Re:wavelengths
« Reply #1 on: October 29, 2004, 09:28:10 AM »
Use the Planck equation of electromagnetic waves.
E=hv.Energy is in J/photon.

Please refer your book before asking the direct questions.
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