Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 630
d be as thin aspossible, and if unmounted should be pressed flat betweentwo glasses. An inexpensive cell for containing objects inwater may be made by pressing two plates of glass, oneinch wide and three inches long, upon opposite sides of oneor two segments of a rubber fruit jar ring, and binding… … port the microscope at such a heio-ht as to cause thebrightest part of the image of the flarne to fall upon theobject. A clear, sharp image may be produced in the man- 6o8 EXPERIMENTAL SCIENCE. ner described, but of course its size is limited by theamount of light available. With a strong light,…
Physics · Lantern projection · Electric apparatus and appliances
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