Library of Universal History And Popular Science volume 21
Library of Universal History And Popular Science volume 21
Isreal Smith Clare
The book Library of Universal History And Popular Science volume 21 was written by author Isreal Smith Clare Here you can read free online of Library of Universal History And Popular Science volume 21 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Library of Universal History And Popular Science volume 21 a good or bad book?
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In fact, since the induction of the current in one part of a circuit takes place on another part of the same circuit across the intervening medium, energy is transferred to the latter while the circuit is closed, and the current remains constant in strength, but is given back to the circuit again to produce the " extra current " on the stoppage of the main current. This is the reason why sparks are obtained on breaking circuit. They are much more brilliant if a coil of many turns be included in... the circuit ; and if the coil contains a soft iron core, this again increases the sparking power. There are various automatic con- trivances called contact-breakers, or interrupters, used for making and breaking circuit with regularity and rapidity, but a detailed description of them is unnecessary for the present purpose. Induction currents have an enormously high electro-motive force, and very striking effects can consequently be produced by them. These are shown in a marked and powerful way by the induction coil or inductorium, often known under the name of Ruhmkorff's coil, as that inventor did much to perfect it.
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