Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 618
n the experiments illustrated in the annexedengravings. The lantern is 12^-^ inches high, including chimney; thecylindrical body is 5 inches in diameter and 6i inches long.The back of the body is closed by a spun concave reflector.The condenser is a double convex lens 2f inches in diame-ter and 4… … 596 EXPERIMENTAL SCIENXE. is i^ inches. The optical combination is not the best thatcan be devised, but it answers a very good purpose. The lamp has a kerosene burner of approved t3pe, and isprovided with a tall chimney, which insures perfect combus-tion and a white light. The reservoir of the…
Physics · Lantern projection · Electric apparatus and appliances
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