The early 1890s saw the development of wireless telegraphy.
Although the behaviour of radio waves had been predicted by James
Clerk Maxwell, the production of a working coherer occupied some of
the greatest practical physicists of the time. A giant in the field
was Heinrich Hertz (1857 94), who was among the first to discover
that radio waves could travel independently of wires. When Hertz
died, his work was continued and soon led to the development of the
first wireless radios. This book, published in 1900, is the third
edition of Sir Oliver Lodge's popular explanation of Hertz's work.
Including the Royal Institution lecture that Lodge (1851 1940) gave
in 1894, along with detailed diagrams, it covers the basic
principles of radio waves and some of the theory surrounding
telegraphic technology. Also included in this reissue is Lodge's
1924 lecture on electrical precipitation, discussing the
scintillating possibility of altering atmospheric conditions
through the use of electrical charges.
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