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File:The Americana - a universal reference library, comprising the arts and sciences, literature, history, biograhy, geography, commerce, etc., of the world (1903) (14773672335).jpg

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Identifier: americanaunivers15beac (find matches)
Title: The Americana : a universal reference library, comprising the arts and sciences, literature, history, biograhy, geography, commerce, etc., of the world
Year: 1903 (1900s)
Authors: Beach, Frederick Converse, 1848-1918 Rines, George Edwin, 1860- Scientific American, inc
Subjects: Encyclopedias and dictionaries
Publisher: New York : Scientific American compiling dept.
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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Fig. 3.— Dispersion method. .^ B C D. copper plat»«in eartli; E, battery; F, transmitter; G. receiver. convenient points; A B are joined with ilength of wire including a battery and tran.s-mitter, and C D are likewise connected in serieswith a receiver; when the current flows fron;the battery through the wire to A B the returacircuit is joined by the earth and owing to its WIRELESS TELEPHONY.
Text Appearing After Image:
1. Ruhincr Photo-electric Telephone Receiver.Ruhraer Plioto-electric Telephone Transmitter. ,^, Collins Wireless Telephone. TELEPHOT great cross-section and conductibility the currentflow follows innumerable lines forming a hemi-sphcroid; when these stream lines of force im-pinge on C D, the circuit, offering a smallerresistance than the earth separating them, actsupon the receiver and the voice is reproduced. Wireless telephony by electro-magnetic in-duction is an ideal laboratory method fordemonstrating its possibilities. In Fig. 4 A Billustrate two closed coils of wire, each ofwhich has one of its convolutions cut; in thefirst a battery and transmitter is inserted andin the second a receiver. When spoken into, thetransmitter varies the current flowing in A andinstantly the coil is surrounded with curved linesof magnetic force which spread out in circlesuntil they intersect the w-ires of the second coil;the magnetic lines are then changed into electric

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29 July 2014


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current12:28, 1 October 2015Thumbnail for version as of 12:28, 1 October 20151,624 × 2,478 (474 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': americanaunivers15beac ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Famericanaunivers15beac%2F fin...

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