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 76
Fig. 35 (<?) Put the wire under the compass and without chang-ing the direction of the current note the direction of thedeflection. (c?) Pass the current froni the cell over the compass fromsouth to north, holding the wire close to the face of the com-pass and make the return wire pass under the…
Physics
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