A natural philosophy : embracing the most recent discoveries in the various branches of physics, and exhibiting the application of scientific principles in everyday life .. (1899)
Quackenbos, G. P. (George Payn), 1826-1881 · New York, Cincinnati [etc.], American book company · leaf 308
THE ELBCTRIFIED HEAD. Dancing Images. Why do the images cease to move if the lower plate is insulated?788. What does Fig. 277 represent ? What takes place when these threads are at-tached to a prime conductor ? 789. Describe the experiment with the Head of Hair. ELECTRICAL EXPERIMENTS. 303 … produced when electricity passes through a vacuum. It is Fig. 280. a glass tube, from two to three feet long, surmounted by abrass ball. This ball is supported on a wire, which passesinto the tube through its air-tight top, and terminates ashort distance below in a point. Inside of the tube,…
Physics
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