KSIĄŻKI POWIĄZANE ZE SŁOWEM «PHONOPORE»
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1
Vintage Telephones of the World
A telephone with the necessary characteristics for superimposed working was the
'Phonopore'. Coils of wire wound in a special way were used in the receivers to
make them insensitive to slowly varying currents. The quality and volume of ...
P. J. Povey, Reg A. J. Earl, 1988
2
Means of Communication Between Intermediate Places and ...
The Simplex Phonopore Telegraph devised by Mr. C. Langdon-Davies is a great
contribution to the economical working of single needle telegraph circuits
between station and station and between stations and intermediate places. When
the ...
3
American Revisions and Additions to the Encyclopaedia Britannica
For laying and maintaining this huge network of cables, a fleet of nearly 40
vessels is constantly occupied. THE PrIoNoroRE.—The phonopore is a
telegraphing device invented by Mr. Langdon-Davies, of London. Some two or
three years ago, ...
William Harrison De Puy, 1892
RADIO PHONOPORE AND ELECTRICALS, LTD., 58, Coleman Street, E.C. The
report of the Official Receiver has been issued to the creditors and shareholders.
The accounts filed under the liquidation show liabilities of £13486, assets valued
...
5
The Encyclopædia Britannica: A Dictionary of Arts, Sciences ...
THE PHONOPORIL—The phonopore is a telegraph— ing device invented by Mr.
Langdon-Davies, of London. Some two or three years ago, he first developed the
system of transmitting signals through circuits which in the ordinary sense are ...
Witn regard to the newly-made arrangement with the manager of the Phonopore
Co., the committee pointed out that Mr. Spagnoletti had stated that the
instruments of the corporation would not work with the ordinary telephone, but
that they ...
7
Electricity, military and life-saving material, alimentary ...
phonopore consists of an induction coil having one primary wire and two
secondary wires. In the primary circuit is placed the sending key, the battery, and
a vibrating reed, which therefore enables primary currents of a very rapidly
intermittent ...
United States. Commission to the Paris exposition, 1889, 1891
8
United States Congressional serial set
phonopore consists of an induction coil having one primary wire and two
secondary wires. In the primary circuit is placed the sending key, the battery, and
a vibrating reed, which therefore enables primary currents of a very rapidly
intermittent ...
9
Reports of the United States Commissioners to the Universal ...
phonopore consists of an induction coil having one primary wire and two
secondary wires. In the primary circuit is placed the sending key, the battery, and
a vibrating reed, which therefore enables primary currents of a very rapidly
intermittent ...
United States. Commission to the Paris Exposition, 1889, 1891
10
Electricity at the Paris Exposition of 1889
phonopore consists of an induction coil having one primary wire and two
secondary wires. In the primary circuit is placed the sending key, the battery, and
a vibrating reed, which therefore enables primary currents of a very rapidly
intermittent ...
