A laboratory course in experimental physics (1896)
Loudon, W. J. (William James), McLennan, John Cunningham, joint author · New York and London, Macmillan and Co. · leaf 113
is turning ifthe points of the two styles are side by side. The style may be 102 EXPERIMENTAL PHYSICS. made of a bristle or stiff hair, or of thin sheet brass ; but in thelast case a small correction will have to be made unless the forkis very large. (b) Organ Pipes. The pitch of an organ pipe may… … Fig. 3. one of the overtones is chosen. Forks with sliding weightsto alter their pitch are best adapted for this purpose. One may also find the pitch of a pipe by means of Helm-holtzs siren, which is shewn in Fig. 3. The siren is attached to a bellows and driven at constantspeed. Counters, shewn in…
Physics
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