The young folk's cyclopædia of games and sports ; (1899)
Champlin, John Denison, 1834-1915, Bostwick, Arthur Elmore, 1860-1942, joint author · New York, H. Holt and company · leaf 472
heboard. This is because most lensesdo not turn the rays accurately toone spot. 6. Prismatic Lens. Look througha lens at a line of light such as theedge of a white house on which thesun is shining. It will probablyappear colored, since the lens actslike a Prism. 7. Water Lens. A good lens ismade by… … Bottle Lens.LEYDEN JAR, a device for ob-taining large charges of electricity.A simple one can be made by fillinga glass tumbler about two thirdsfull of shot and inserting a silverteaspoon (see Fig. i). The tum-bler must be held in one hand, whilethe teaspoon is presented to anElectric Machine, or…
Games · Sports · Card games
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