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KF5JRV > TECH 22.07.16 12:20l 35 Lines 2001 Bytes #999 (0) @ WW
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Subj: Morse Transmits the First Message by Morse Code
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Morse Transmits the First Message by Morse Code
On May 24, 1844 Samuel F. B. Morse transmitted the first message on a
United States experimental telegraph line (Washington to Baltimore)
using the "Morse code" that became standard in the United States and
Canada. The message, taken from the Bible, Numbers 23:23, and recorded
on a paper tape, had been suggested to Morse by Annie Ellworth, the
young daughter of a friend. It was "What hath God wrought?"
The recipient of Morse's message was Morse's associate in developing
the telegraph, machinist and inventor Alfred Vail.
Vail, who had worked with Morse since September 1837, expanded Morse's
original experimental numeric code based on a optical telegraph codes,
to include letters and special characters, so it could be used more
generally. Vail determined the frequency of use of letters in the English
language by counting the movable type he found in the type-cases of a
local newspaper in Morristown. The shorter marks were called "dots",
and the longer ones "dashes", and the letters most commonly used were
assigned the shorter sequences of dots and dashes. Vail was thus
responsible for inventing the most useful and efficient features of
the Morse Code.
The Morse Code became the first widely used data code.
Probably the first publication of the Morse Code was in Vail's Description
of the American ElectroMagnetic Telegraph: Now in Operation between the
Cities of Washington and Baltimore (Washington: Printed by J. & G. S.
Gideon,1845). Vail issued two versions of this in 1845: a 24-page pamphlet,
with the title just mentioned, which was probably the first, and a
much-expanded 208-page book "with the Reports of Congress, and a
Description of All the Telegraphs Known, Employing Electricity or
Galvanism." The rear wrapper of the 24-page pamphlet states that it
was sold for 12.5 cents, and that the larger work which was "just
published" by Lea & Blanchard, Philadelphia, was available for 75 cents.
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