IN spectroscopic literature there are many casual references to a continuous background in the vacuum tube spectra of various gases, such as oxygen, chlorine, etc. Usually these observations appear to ...

PROF. W. M. GREAVES, president of the Royal Astronomical Society, delivered his presidential address on February 14, 1948, to the Society at Burlington House, selecting as his topic "The Photometry, ...

Torben Larsen received his M.Sc. degree in electrical engineering from Aalborg University, Denmark, in 1988. In 1995 he founded the RF Integrated Systems and Circuits group, which today counts more ...