Word: electromagnets
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Dates: during 1930-1939
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...polarized by a Nicol prism, then sent through a cell containing carbon disulfide, a second cell containing a water solution of any substance to be tested; lastly through a second analyzing Nicol prism. Each of the two cells is surrounded by a coil of electric wire which becomes an electromagnet. The coils are so wound that the swings of the magnets are in opposite directions. To operate, the Allison device is so set that, with the magnets not working, the beam of light passing from the spark through the two cells and mirrors is at a minimum. Then...