spectroscopy

spectroscopy - Objective: The objective for this lab will...

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Objective: The objective for this lab will be to demonstrate the wave nature of light by measuring the wavelengths of various spectral lines emitted from a mercury lamp with a diffraction grating spectrometer. Procedure: Set up the mercury lamp and allow it sufficient time to warm up before performing the experiment. Measure the angles of the first and second order green spectral lines on either side of the zero order line. For a certain order take the average of the sines' as the final experimental value of sinθ n . Because the Hg green line has a well- known wavelength of 546.07 nm, the grating spacing d can be therefore determined by using the equation given. For the next part of the experiment, measure the positions of as many orders of each spectral line on each side of the zero-order beam as possible. Calculate the average wavelength for each observed color. Make sure that you repeat these measurements several times so that you have reliable values and their associated errors for the wavelengths.
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This note was uploaded on 04/26/2008 for the course PHY 114 taught by Professor Tsen during the Spring '08 term at ASU.

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spectroscopy - Objective: The objective for this lab will...

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