A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 532
, who was one of theforemost leaders in the development of telegraphy. A- J S- B K T C L U- D M V- E- N—- w F 0 X G P Y H Q Z- I-- R This alphabet is still the international code. ELECT RO MAGNET ISM. 5°7 The alphabet now used in this country differs from thatof Morse in the following; cases: C--… … Fig. 275. cuit. The action of the spring makes it possible to workthe lever up and down rapidly. When not in use the key is shunted, that is, side-tracked,by a metal bar s, called a switch, connecting m and p. The arrangement of a short telegraphic line is indicatedin Fig. 276, where the left-end…
Physics
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