Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 447
ary or inducedcurrent ? How doesmaking and breakingthe primary circuitcompare with thrust-V ing in and withdraw- ing the magnet ?These secondarycurrents are formed by the cutting of the lines of mag-netic force by the turns of wire forming the secondarycoil. The induction or Ruhmkorff coil is… … SOUND Experiment 48 Motion of Sonorous Bodies. Apparatus. — A tuning fork; a bell; a thread ; a piece of cork. (1) Sound a tuning fork, and hold one of the prongsagainst the cheek. Sound the fork again, and dip the prongs slightly intowater. (2) Strike a bell, and hold against its edge a piece…
Physics
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