File:Radio, miracle of the 20th century a story of human achievement that stands unrivalled in the history of humanity, together with a colorful portrayal, giving a broad, general view of the whole subject (14570071120).jpg

Identifier: radiomiracleof2000drin (find matches)
Title: Radio, miracle of the 20th century ... a story of human achievement that stands unrivalled in the history of humanity, together with a colorful portrayal, giving a broad, general view of the whole subject of wireless telegraph and telephone and its marvelous development
Year: 1922 (1920s)
Authors: Drinker, Frederick E. (from old catalog) Lewis, James G., (from old catalog) joint author
Subjects: Radio
Publisher: (Philadelphia, Printed by National publishing co.)
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
opes can be made to magnify from 6,000 to8,000 times. A microscope which would take that resultand magnify it as much again would show the molecularstructure of water. For instance, if a globe of water thesize of a football (6 1-4 in.) in diameter were magnifiedto the size of the earth the molecules or granules wouldbe hardly greater than small shot and certainly less thanfootballs in size. If we magnify a cubic inch of water toa cube whose side is the diameter of the earth, in theenormously magnified cube there will be one particle toevery cubic inch. The action of molecular constituents of a gas is wellto note at this point. In a gas no force is needed to sepa-rate the molecules from one another. The molecules arein motion constantly. And the same applies to the mole-cules of all bodies. This is what is known as molecularmotion. In a gas the molecules rush hither and thither,colliding with one another and with the sides of the con-taining vessel. In the atmosphere the number of col-
Text Appearing After Image:
Copyright, Underwood & Underwood, N. Y.NEW COM 1ACT RADIO DEVICE CARRIED IN SUITCASEBrent Daniel, of Washington, is here shown with his supersensitiveradio receiving device, so compact that it can be carried in an ordinarysuitcase. The new radio device is capable of receiving messages withina radius of 400 miles. This radio set was one of the most prominentexhibits at the Radio Convention held in Washington. ^I^rhT^

Note About Images