Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 170
which the soundis produced, a glass tube will be required. This tube,whether of metal or glass, may be 40 inches long and oneinch internal diameter. It should be supported in a fixedvertical position in a suitable support, a filter support, forexample. In a lower arm of the support is placed a… … Production 01 Sounding Flames. in height. The tube is drawn down by heating it near oneend until it softens, by continually turning it in a gas flame,then quickly removing it from the flame, and drawing it outas far as possible. By making a nick with a hne file in one 148 EXPERIMENTAL SCIENCE. side…
Physics · Lantern projection · Electric apparatus and appliances
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