Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 316
- utilized for examiningobjects under motion which could not otherwise be satis- FiG. 303 … Light Interrupter for the Microscope. factorily studied. To apply intermittent light to the micro-scopical examination of ciliated organisms, the writer hasdevised the electrically rotated apertured disk shown inFig. 303, which is arranged to interrupt the beam of lightemployed in illuminating the…
Physics · Lantern projection · Electric apparatus and appliances
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