Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 78
ances must beheld very still while these lines are being drawn, and must be readbefore any change occurs in the direction of the lines.* To draw aline place one side of the block (No. 9) close alongside one branch ofthe thread, taking care not to push the thread out of place, and thenrun the point… … Fig. 42. side them the proper forces. The directions of the pulls should bevaried somewhat by each experimenter, in order that his lines andforces may not be exactly like those of others. Take now the wooden ruler (Xo 3), and extend the three linestoward each other till they meet at one point. This…
Physics
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