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The American Electro Magnetic Telegraph / With the Reports of Congress, and a Description of All Tel by alfred-vail - Writeroo
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The American Electro Magnetic Telegraph / With the Reports of Congress, and a Description of All Tel
49 Parts ·
7 hours
alfred-vail
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Contents
Part 1
The american electro magnetic telegraph:
a min
Part 2
Introduction.
3 mins
Part 3
The galvanic battery.
9 mins
Part 4
The wire.
a few seconds
Part 5
The electro magnet.
30 mins
Part 6
Alphabet.
2 mins
Part 7
Specimen of the telegraphic language.
10 mins
Part 8
Correspondent or key.
16 mins
Part 9
The lever key.
2 mins
Part 10
The circuit of the electro magnet, closed and broken by the movement of the lever itself, acted upon
4 mins
Part 11
Conducting power and galvanic action of the earth.
2 mins
Part 12
Six independent circuits, with six wires, each wire making an independent line of communication.
5 mins
Part 13
Mode of secret correspondence.
24 mins
Part 14
The galvanometer or galvanoscope.
3 mins
Part 15
An interesting experiment of supporting a large bar of iron within the helix. discovered by mr. vail
a min
Part 16
Application of the electro magnetic telegraph to the determination of longitude.
2 mins
Part 17
Mode of crossing broad rivers, or other bodies of water, without wires.
7 mins
Part 18
Telegraphic chess playing
a few seconds
Part 19
First game of chess.
a few seconds
Part 20
Second game.
a min
Part 21
Improvement in the magneto electric machine, and application of this instrument to operate the magne
4 mins
Part 22
Reports to congress on the subject of electro magnetic telegraphs.
2 hrs
Part 23
Employing electricity in various ways for the transmission of intelligence.
16 mins
Part 24
Lomond’s electrical telegraph.
2 mins
Part 25
Reizen’s electric spark telegraph.
3 mins
Part 26
Dr. salva’s electric spark telegraph.
a few seconds
Part 27
Origin of galvanism.
6 mins
Part 28
The decomposition of water.
2 mins
Part 29
Samuel thomas soemmering’s description of his voltaic electric telegraph, invented in 1809.
6 mins
Part 30
Extract from the journal of the franklin institute, vol. 20, page 325.
4 mins
Part 31
Ronald’s electric telegraph, invented in 1816.
3 mins
Part 32
Electro magnetism.
7 mins
Part 33
The following extract is taken from a work on electro magnetism published by jacob green, m. d. prof
2 mins
Part 34
Triboaillet’s proposition.
a min
Part 35
Fechner’s suggestion.[22]
a few seconds
Part 36
Magneto electricity.
22 mins
Part 37
Dr. page’s magneto electric machine.
8 mins
Part 38
The pole changer.
5 mins
Part 39
Schilling electric telegraph.
4 mins
Part 40
[27] the electro magnetic telegraph, of counsellor gauss and professor william weber, invented at gö
5 mins
Part 41
Experiment of messrs. taquin & ettieyhausen.[28]
a few seconds
Part 42
Electro magnetic printing telegraph, invented by alfred vail, september, 1837.
27 mins
Part 43
Steinheil’s electric telegraph.
7 mins
Part 44
Masson’s electric telegraph.
a few seconds
Part 45
Davy’s needle and lamp telegraph.
4 mins
Part 46
Alexander’s electric telegraph, from the (scotsmen) mechanic’s magazine, nov. 1837.
5 mins
Part 47
Extract from the report of the academy of industry, in reference to a suggestion of m. amyot of an e
a min
Part 48
Bain’s printing telegraph.
8 mins
Part 49
Wheatstone’s rotating disc telegraph, invented, 1841.
11 mins