Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 171
Fig. 152 Fig- I S3 Fir- 154 leather, and can be laised or lowered by means of a screw ; this arrange-ment has the advantage that a constant level can be obtained, and alsothat the instrument is made more portable. For, in travelling, it is onlynecessary to raise the leather until the mercury, which…
Physics
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