Telegraphy and how to learn it; with brief chapters on elementary science, embracing various kinds of electricity, electrical measurements, thermo-frictional electricty, batteries, magnets and magnetism (1901)
Frederic, Wilson. [from old catalog] · Chicago, The Henneberry co · leaf 51
-wax and the+e of the pith-ball, and repulsion betweenthe — e of the sealing-wax and the — eof the pith-ball. But since the distance isless in the first case, the attraction exceedsthe repulsion. INSTRUCTION IN TELEGRAPHY. The Morse telegraph alphabet is madeup of dots and dashes and should be… … FRICTIONAL, ELECTRICITY. 49MORSE ALPHABET. A B C D E F G H I J K L M NOP Q R S T U V W X Y Z & NUMERALS. 2 3 4 6 7 8 9 0 • t - ■ PUNCTUATION MARKS. Period. Comma. Colon. Question Semi-colon. Interrogation. mark. Parenthesis. Dollar mark. Paragraph. — — -- Exclamation. 50 TELEGRAPHY.…
Telegraph
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