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 73
Fig. 31 … and closed, and record any differences which are observed inthe action. III. Magnetic Effects observable about the Wire connect-ing the Strips. Place a very simple form of galvanoscope(coil of wire with compass in the center, Fig. 31, a or J) so that the plane of the coil is northand south. Connect…
Physics
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