Search results
A New Microwave Mixer - Nature
Nature· 1 day agoTHE Hall effect in semi-conductors has been used at microwave frequencies for the measurement of power. A local oscillator is used for establishing a field in a resonant cavity and a small piece ...
Superconductivity at High Frequencies - Nature
Nature· 1 day agoWE have recently repeated with unsilvered vacuum flasks our experiments reported in NATURE of Aug. 29, p. 373, and in the Phil. Mag. of September last, and find lead and tin become superconducting ...
The Theory of Frequency-Distributions 1 - Nature
Nature· 1 day agoCharlier, director of the astronomical observatory at Lund. An “error“ is supposed to be given by the sum of a large number of elementary errors, each with its own law of frequency& ...
A New Determination of the Velocity of Electromagnetic Radiation by Microwave Interferometry -...
Nature· 1 day agoTHE free-space phase velocity of microwaves of length 1.25 cm. and frequency 24,000 Mc./s. has been measured by a new method.
The Law Which Regulates the Frequency of the Pulse - Nature
Nature· 1 day agoFROM a pamphlet on this subject, recently published by Mr. A. H. Garrod, we extract the following summary of the main features of the circulation:—
A General Method for the Localization of Electronic Transition Frequencies in Continuous Absorption...
Nature· 1 day agoTHE more or less complete lack of vibrational structure in ultra-violet absorption spectra of polyatomic molecules has made it impossible to locate the frequency corresponding ...
Sound-Films as Diffraction Gratings for the Visual Fourier Analysis of Sound-Waves - Nature
Nature· 1 day agoIT may be of interest to give a preliminary account of what I believe to be a new method of producing acoustic spectra. The method, which is to employ the striations on “variable-density” sound-film ...
Absorption of Ultra High-Frequency Radio Waves in Organic Liquids - Nature
Nature· 1 day agoTHE anomalous absorption of radio waves of wave-lengths lying between 50 cm. and 1 metre was observed long ago by Drude1, Romanoff2 and others. Romanoff studied the absorption in some alcohols ...
Correlation Study of Bovine Erythrocyte Antigen A and Butterfat Test - Nature
Nature· 1 day agoFilmer (personal communication) suggested that the most logical antigen production factors to test would be antigen A and butterfat test, because of the direct correlation between high
Effect of Centrifugation of the Eggs on the Sex of Carausius morosus Br. - Nature
Nature· 1 day agoTHE stick insect Carausius morosus Br. reproduces parthenogenetically. However, non-functional males appear spontaneously by loss of a sex-chromosome. This occurs with a frequency< ...
