Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 34
Fig. 8. F*g. 9. * The success of a difficult experiment like thisdepends greatly upon the care with which the detailsof the work are thought out by the teacher. Thefollowing method of attaching the block to the bal-ance is recommended : Take a thread two feet longand tie the ends together. Then…
Physics
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