Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 187
g. 108.) 174 PHYSICS. ARTICLES USED BY THE TEACHER, BUT NOT TO BEFURNISHED TO STUDENTS. (Most of them are referred to by number in the Experiments of this book.) No. I. A gauge for testing pressure at various points and in vari-ous directions in a jar of water. In Fig. 122, P is a pillar of wood… … eter, fitting closely on their axes ; r is a small rubber tube ; g is aglass tube ; i is a short column of water serving as an index. A bandof strip-rubber, such as toy stores supply, connects the two pulleys pand p, so that by turning a, the axis of the upper pulley, between thethumb and finger,…
Physics
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