So rapid have been the advances made in radiotele-graphy and radio telephony that the author has found it necessary to rewrite much of the first edition of this useful book. The invention of the ...

THE thermionic valve has long been recognized as a useful tool in many branches of science and engineering; but few, with the exception of experimenters, have realized that it can be usefully applied ...

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 ...

Includes the lectures given at the Institution's special meeting, Nov. 16, 1954, and a catalogue of the exhibition, held Nov. 15-17, 1954. https://siris-libraries.si ...

Lancaster can claim a connection to one of Britain’s greatest scientific pioneers, John Ambrose Fleming.