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Old Oct 9th 2019, 09:34 PM   #1
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Diffraction Gratings

Mercury has visible optical spectral lines of wavelengths 422.729
and 422.787 nm. You have an apparatus that allows the light to fall
on only 0.800 cm of a transmission diffraction grating. How many
lines per cenrimeter does your diffraction grating need in order to
resolve the third-order maxima of the two mercury lines?

Last edited by DazaiReta; Oct 10th 2019 at 06:02 AM.
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Old Oct 10th 2019, 04:28 AM   #2
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What exactly is your problem?

It is unclear from your post what it is you want...
You have just posted a question plus its answer,
what reply are you expecting?

There are well defined mathematical methods for defining the interaction between wavelength and diffraction grating.

If you are being asked these questions then it must be assumed that you should know these mathematical equations
(or at least know where to find them)

Given these mathematical equations, the answers should be just a matter of plugging the appropriate values into the appropriate places in the equations.
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Old Oct 10th 2019, 06:02 AM   #3
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Please help I don't know how to solve it
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diffraction, gratings, mercury, wavelengths



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