IT is now eighteen months since we last attempted in these columns to take a general survey of the development of wireless telegraphy. In the history of a science which has enlisted the services of so ...

Appendices (p. [655]-685): I. Wireless telegraphy act of 1904. II. Bibliography of electric wave telegraphy. III. British patent specifications for improvements in ...

As you blithely cruise your electric bicycle past the gates of Naval Base Point Loma, you really don’t notice the offices of NIWC (Naval Information Warfare Center) Pacific, do you? How about the ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

THE time for writing a history of ‘wireless’ has scarcely come yet, but it is well that somebody should collect data and sift material for this arduous enterprise. Mr. Blake has done this diligently ...

CC0 Usage Conditions ApplyClick for more information. This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the ...

WASHINGTON D.C. In a unanimous panel ruling, the Federal Circuit invalidated a patent owned by Salem, Massachusetts inventor A. G. Bell. On February 14, 1876, Mr. Bell was granted Letters Patent No.

Any pulp writer worth his salt knows that when his locale is darkest Africa he can’t use too many drums. In a good standard plot, talking drums warn fierce natives of the unsuspecting white man’s ...