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Exhibition of Electrical Measuring Instruments - Nature
Nature· 1 day agoAmmeters were first made having needles of soft iron polarised by a powerful magnet and having a deflecting coil closely adjacent. In 1881, Ayrton and Perry designed such ...
A New Mechano-Electrical Transducer - Nature
Nature· 1 day agoRECENTLY the U.S. National Bureau of Standards has announced the development by W. A. Wildhack of a new highly sensitive mechano-electrical transducer in which small mechanical displacements ...
Magnetic Recording in Broadcasting - Nature
Nature· 1 day agoIN a paper read by A. E. Barrett and J. C. F. Tweed to the Institution of Electrical Engineers on December 1, some of the methods of recording sound, especially those in connexion with their ...
Suppression of Radio Interference - Nature
Nature· 1 day agoA DESCRIPTION is given in the of December 27 of experiments on the suppression of radio interference produced by trolley buses, carried out by Post Office engineers in several towns. At Southend ...
Societies and Academies - Nature
Nature· 1 day agoA form of the platinum-thermometer type of vacuum calorimeter has been developed which is suitable for the determination of true specific heats at high temperatures, since it is constructed ...
Societies and Academies - Nature
Nature· 1 day agoThree types of apparatus of the “plate” type are described for the rapid precision determination of the thermal conductivities of materials at low conductivity. An average time for the attainment ...
Effects of Local Conditions on Radio Direction-Finding - Nature
Nature· 1 day agoTHE methods used for finding the direction in which Hertzian waves are incident at a radio station have now attained a high accuracy, the maximum error being well under one degree. It does not ...
Sir Frank Smith, G.B.E., K.C.B., F.R.S - Nature
Nature· 1 day agoSIR FRANK EDWARD SMITH will relinquish on January 31 his appointment as secretary to the Committee of the Privy Council for Scientific and Industrial Research, a post which he has held with ...
Light Scattering by very Stiff Chain Molecules - Nature
Nature· 2 days agoVERY precise light-scattering measurements by B. H. Bunce1 on several thymonucleic acid preparations have shown that the scattering function of these gigantic macromolecules—the molecular weights ...
Light Scattering by Very Large Molecules: Application of Transmission Method to Actomyosin - Nature
Nature· 2 days agoIN estimating the size of very large colourless molecules by light scattering, according to the transmission method1, the following relationships are relevant: where τ is the turbidity of the ...
