 Therefore, if the controlling force under which a body vibrates is due to the action of an electro-magnet on its armature, the square of the number of vibrations in a given time is a measure of the square of the electric current.  The Principles and Practice of Electric Lighting - Page 26by Alan Archibald Campbell Swinton - 1884 - 172 pagesFull view - About this book
 | Denison Olmsted - Physics - 1870 - 464 pages
...magnet. The square of the number made in a given time is a measure of the attractive force, just as the square of the number of vibrations of a pendulum is a measure of the force of gravity (Art. 170). 230 367. Equilibrium of a Needle Near a Magnet. — Tf a small needle, free... | |
 | Denison Olmsted - Physics - 1871 - 466 pages
...magnet. The square of the number made in a given time is a measure of the attractive force, just as the square of the number of vibrations of a pendulum is a measure of the force of gravity (Art. 170). 367. Equilibrium of a Needle Near a Magnet—If a small needle, free to revolve,... | |
 | Electricity - 1883 - 692 pages
...well-known principles. 1 . The force acting on the armature of an electro magnet, in any position, is proportional to the square of the current. 2. The square of the number of vibrations, say, of a pendulum, is a measure of the controlling force. VOL. xn. 7 98 ON THE MEASUREMENT OF ELECTRICITY... | |
 | Electrical engineering - 1883 - 706 pages
...well-known principles. 1. The force acting on the armature of an electro magnet, in any position, is proportional to the square of the current. 2. The square of the number of vibrations, say, of a pendulum, is a measure of the controlling force. Therefore, if the controlling force under... | |
 | John Hopkinson - Electric lighting - 1896 - 188 pages
...wellknown principles. (1) The force acting on the armature of an electro-magnet, in any position, is proportional to the square of the current. (2) The square of the number of vibrations, say, of a pendulum, is a measure of the controlling forceTherefore, if the controlling force under... | |
 | Industrial arts - 1903 - 504 pages
...well-known principles : (I) The force acting on the armature of an electro-magnet, in any position, is proportional to the square of the current ; (2) the square of the number of vibrations, say, of a pendulum, is a measure of the controlling force. Therefore, if the controlling force under... | |
 | Engineering - 1883 - 562 pages
...wellknown principles. (1) The force acting on the armature of an electro-magnet, in any position, is proportional to the square of the current. (2) The square of the number of vibrations, say, of a pendulum, is a measure of the controlling force. Therefore, if the controlling force under... | |
 | Institution of Electrical Engineers - Electrical engineering - 1883 - 686 pages
...well-known principles. 1 . The force acting on the armature of an electro magnet, in any position, is proportional to the square of the current. 2. The square of the number of vibrations, say, of a pendulum, is a measure of the controlling force. VOL. XII. 7 Therefore, if the controlling... | |
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