MP7%20Intro%20PHY257new

MP7%20Intro%20PHY257new - MP7 Atomic Spectroscopy PHY 257...

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MP7 Atomic Spectroscopy PHY 257 In this lab we will comp lete the follo wing tas ks : (page 1) - Become familiar with a grating spectrometer - Measure the wavelengths for the Balmer series in Hydrogen - Measure the average wavelength of the Sodium D-line - Measure the separation between the components of the D-line (optional) - Determine the cutoff wavelengths for a “low pass” filter
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In this lab we will use the grating spectrometer shown in the figure. Light, whose wavelength λ we wish to determine, is collimated (its rays are parallel) by the collimator of the spectrometer. The collimated light is then incident at right angles to a grating and it gets diffracted according to the equation: Here m = 1,2,3, … is an integer known as the “diffraction order” and d is the separation between two successive lines on the grating. The wavelength λ is given by the equation: sin m d m θ λ= (page 2) sin m dm λ =
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θ R θ L m = 1 m = 1 m = 0 Incident light Diffracted light grating L For each
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This note was uploaded on 10/20/2011 for the course EE 257 taught by Professor staff during the Spring '11 term at SUNY Buffalo.

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MP7%20Intro%20PHY257new - MP7 Atomic Spectroscopy PHY 257...

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