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A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)

Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 479

An illustration from A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments.", 1891, leaf 479 — the machine for operation is, or may be,as follows: Separate the balls, b and b (Fig. 246), two or three centi-meters, and then rub the paper of the armature AB (Fig. 244) gentlywith a catskin, the plate C meanwhile remaining at rest. If now, before C is started, different metal parts of the…

Physics

Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.

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