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10 Nov 2019
Suppose that you have a reflection diffraction grating with n= 780lines per millimeter. Light from a sodium lamp passes through thegrating and is diffracted onto a distant screen.
A.) Two visible lines in the sodium spectrum have wavelengths 498nm and 569 nm. What is the angular separation \Delta \theta of thefirst maxima of these spectral lines generated by this diffractiongrating?
B.) How wide does this grating need to be to allow you to resolvethe two lines 589.00 and 589.59 nanometers, which are a well knownpair of lines for sodium, in the second order (m=2)?
Suppose that you have a reflection diffraction grating with n= 780lines per millimeter. Light from a sodium lamp passes through thegrating and is diffracted onto a distant screen.
A.) Two visible lines in the sodium spectrum have wavelengths 498nm and 569 nm. What is the angular separation \Delta \theta of thefirst maxima of these spectral lines generated by this diffractiongrating?
B.) How wide does this grating need to be to allow you to resolvethe two lines 589.00 and 589.59 nanometers, which are a well knownpair of lines for sodium, in the second order (m=2)?
Jarrod RobelLv2
11 Mar 2019
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