A text-book of physics : with sections on the application of physics to physiology and medicine (1902)
Lehfeldt, Robert Alfred, 1868-1927 · London : E. Arnold · leaf 68
tapes, leading over vertical pulleys and carryingweights. The pair of weights were so arranged as to tend to turn theshaft round in the sense opposite to that in which the paddles acted;hence by adjusting the weights correctly they could be made to balancethe turning moment, or torque, of the… … Fie, 23. 58 HEAT fulfilled or not, a small mirror was attached to the horizontal pulley,and a telescope focussed so as to see the reflection of a lamp in themirror. If then the pulley be rotated even through a very small angle,the image of the lamp will be shifted in the field of view of the…
Physics
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