THE modern thermionic valve has now become of world-wide importance, not only in connexion with radio broadcasting, but also in its many applications in scientific and commercial instruments, and in ...

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 ...

A Spanish-Italian research group has developed a solid-state thermal-to-electric energy converter based on hybrid thermionic-photovoltaics (TIPV) for different applications. It consists of a ...

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 ...