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 253
hod is very simple andexact, and free from this difficulty. It consists in fixing a fine point to thebody emitting the note, and causing it to trace the vibrations on a properlyprepared surface. The apparatus consists of a wood or metal cylinder, A (fig. 237), fixed toa vertical axis, O, and turned… … Fig- 237 the cylinder is rolled a sheet of paper covered with an inadhesive film otlampblack. On this film the vibrations register themselves. This is effectedas follows. Suppose the body emitting the note to be a steel rod. It is heldfirmly at one end, and carries at the other a fine point which…
Physics
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