Gregg, J. B. [from old catalog] · Ada, Ohio, The University herald press · leaf 75
ING FORK. Method* —1. By the Siren. Bring the pitch of the siren tothat of the tuning fork by increasing the number of rotations.Use a speed indicator to determinethe rate of rotation. 2. By Interference. Connect thearms of the interference tube with therubber tubing. Make both arms ofabout equal…
Physics
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