Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 681
- should acquaint himself. 6s8 EXPERIMENTAL SCIENCE. Very few tools and appliances are needed. The mostimportant requisites are a gas blowpipe capable of producing-brush and pointed flames, a bellows for supplying air to theblowpipe, some pieces of charcoal or carbon having pyra-midal ends, corks… … Welding a Tube. These should be purchased at one place and time, if possible,to insure uniformit} in quality. Soft German glass is themost satisfactory. A small tube is divided into lengths by first nicking itwith the file, then grasping it in both hands, placing thethumb nail against the glass…
Physics · Lantern projection · Electric apparatus and appliances
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