Ruhmkorff coil

American  

[room-kawrf] / ˈrum kɔrf /

noun

Electricity.

1. induction coil.

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Etymology

Origin of Ruhmkorff coil

1850–55; named after Heinrich Daniel Ruhmkorff (1803–77), German physicist, its inventor

Example Sentences

The course of electrical events attending the operation of a Ruhmkorff coil being extremely complicated, special interest attaches to some experiments conducted by John Trowbridge and T.W.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" by Various

This is done in the Ruhmkorff coil primary; the condenser forms a sort of blind alley for the extra current on its beginning to flow out of the primary coil.

From Scientific American Supplement, No. 711, August 17, 1889 by Various

Ruhmkorff coil which is in action but not sparking.

From The Boy Mechanic: Volume 1 700 Things for Boys to Do by Popular Mechanics Co.

My uncle now began to see to the efficiency of our Ruhmkorff coil, which would doubtless soon be needed; the raft, securely fastened to a rock, was left alone.

From A Journey to the Centre of the Earth by Verne, Jules

This pile was connected with the inductor of a small Ruhmkorff coil, whose armature was connected with a snaffle-bit placed in the horse's mouth.

From Scientific American Supplement, No. 443, June 28, 1884 by Various