"Little Masterpieces of Science: Invention and Discovery" by Various. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.
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Various. Little Masterpieces of Science: Invention and Discovery
Little Masterpieces of Science: Invention and Discovery
Table of Contents
PREFACE
INVENTION AND DISCOVERY
FRANKLIN IDENTIFIES LIGHTNING. WITH ELECTRICITY
FARADAY'S DISCOVERIES LEADING UP. TO THE ELECTRIC DYNAMO. AND MOTOR
PROFESSOR JOSEPH HENRY'S INVENTION. OF THE ELECTRIC TELEGRAPH
THE FIRST ATLANTIC CABLES
George Iles
FOOTNOTES:
BELL'S TELEPHONIC RESEARCHES
PHOTOGRAPHING THE UNSEEN: THE ROENTGEN RAY
H. J. W. Dam
THE WIRELESS TELEGRAPH
George Iles
FOOTNOTES:
ELECTRICITY, WHAT ITS MASTERY. MEANS: WITH A REVIEW. AND A PROSPECT
George Iles
FOOTNOTES:
COUNT RUMFORD IDENTIFIES HEAT WITH MOTION
VICTORY OF THE “ROCKET” LOCOMOTIVE
FOOTNOTES:
Отрывок из книги
Various
Published by Good Press, 2019
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Faraday, for a time, believed that the secondary wire, though quiescent when the primary current had been once established, was not in its natural condition, its return to that condition being declared by the current observed at breaking the circuit. He called this hypothetical state of the wire the electro-tonic state: he afterwards abandoned this hypothesis, but seemed to return to it in after life. The term electro-tonic is also preserved by Professor Du Bois Reymond to express a certain electric condition of the nerves, and Professor Clerk Maxwell has ably defined and illustrated the hypothesis in the Tenth Volume of the “Transactions of the Cambridge Philosophical Society.”
The mere approach of a wire forming a closed curve to a second wire through which a voltaic current flowed was then shown by Faraday to be sufficient to arouse in the neutral wire an induced current, opposed in direction to the inducing current; the withdrawal of the wire also generated a current having the same direction as the inducing current; those currents existed only during the time of approach or withdrawal, and when neither the primary nor the secondary wire was in motion, no matter how close their proximity might be, no induced current was generated.
