Laboratory exercises in physics for secondary schools (1902)
Twiss, George Ransom, b. 1863 · New York, London, The Macmillan company · leaf 137
until the instructor haspersonally directed you. Such further instructionsas are thought proper will be supplied. The adjust-ments described in the sentences marked thus, *, arerather difficult, and in attempting them without per-sonal direction the inexperienced person is likely todisable the… … IEVEUNG ^SCREWS Fig. 24. — DArsonval Galvanometer. MAGNETISM AND ELECTRICITY 109 can turn freely without touching either the magnetswhich embrace it or the core which it surrounds.The weight of the coil may be lifted off the suspen-sion by a screw or lever, which acts upon it frombehind. To lower…
Physics
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