A laboratory manual in physics, to accompany Black and Davis' "Practical physics for secondary schools," (1913)
Black, Newton Henry, 1874- [from old catalog] · New York, The Macmillan company · leaf 99
ratus (Fig. 52).Glass plates.Stop watch. Alcohol lamp filled with tur-pentine and alcohol. a tuning fork (-F),with a fine wireor paper point at-tached to one prong,and a short pen-Fig. 52 ^ dulum (M)i which rrMsasssss hne beneath the Pom» vibrations, so as to at right angles to the ,<brectton ^^… … FREQUENCY OF A TUNING FORK 85 Clamp the tuning fork so that its tracing point is only afew millimeters from the point of the pendulum. The lineof these two tracing points should be parallel to the directionin which the glass is to move. The tracing points must restlightly on the smoked » ss surface…
Physics
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