-
which signal boxes along the line
communicate with
neighbouring boxes by
telegraphic sounding of single-stroke
bells and three-position
needle telegraph instruments...
-
Animal Locomotion: An
Electro-photographic
Investigation of
Consecutive Phases of
Animal Movements is a
series of
scientific photographs by
Eadweard Muybridge...
- importantly)
understood that a
single large battery would not
carry a
telegraphic signal over long distances. He
theorized that
numerous small batteries...
-
detecting these "Hertzian waves" into a purpose-built
commercial wireless telegraphic system.
Early on, he sent
wireless signals over a
distance of one and...
-
electrical currents at
selected audio frequencies in
wires which transmitted telegraphic messages electrically over long distances. U.S.
patent 0,161,739 – Improvement...
-
states all
postal and
telegraphic services and
administer them on a
national basis. The PMG
Department progressively improved telegraphic equipment. In 1905...
- of lightning.
Together with an appendix,
containing several important telegraphic decisions and laws (2nd ed.). Philadelphia: A. Hart. p. 162.
Dobrin (1976)...
- with
electro-pneumatic brakes" Ian
Allan ABC, 1968
British Railways Motive Power Survey, p.15 "the
letters IG (4CIG, 4BIG), the old
LBSCR telegraphic code...
- S.
patent 0,114,656 –
Telegraphic Transmitting Instruments U.S.
patent 0,114,657 –
Relay Magnets U.S.
patent 0,114,658 –
Electro-Magnets for Telegraph...
- telegraphy, then only experimental:
Munke had
illustrated his
lectures with a
telegraphic apparatus on the
principle introduced by
Pavel Schilling in 1835. Cooke...
