Michelson Interferometer
Optics
We are indebted to this monumental genius for that equally important branch of Astrophysics - in which the spectroscope plays so fundamental a role - by means of which we are enabled to discover the physical and chemical constitution of the heavenly bodies, as well as their positions and motions.
-Albert Michelson, from his Nobel lecture on spectroscopy
In this experiment you will use a similar device to that which was used by Michelson and Morley to discredit the ether theory. You will accurately measure the wavelength of input light by creating an interference pattern, and become accustomed to this common optical device.
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The Michelson Interferometer. The beam splitter assembly is located in the center of the device. The fixed mirror (path A) extends to the lower right, and the movable mirror (path B) extends to the upper right. Note the vacuum chamber along path B, and the automated stepping servo attached to the lever behind the movable mirror. |
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Far Left: Digital and analog pressuremeter, use the digital meter. Center: Vacuum Pump. Right: Carbon dioxide tank. |
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