Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 112
recording, while the primary event itselfmay take place at any remote distance. The interval elapsing between two consecutive sparks maybe easily and accurately recorded as follows: A cylindri-cal metallic drum is so mounted on a horizontal screw, thaton turning the latter, the drum is given a… … rig. 31. ings to the cylinder, the other terminal is connected to ametallic style resting on the paper. A spark, on passingbetween the style and the drum, punctures the paper andsplashes the lampblack at the point of contact of the style,in the form of a white dot. If the drum be rotatedunder 110…
Physics · Mechanics
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