摘要:

A method for determining the densities of liquids is described in which a float containing a magnet is utilized. The conditions under which the submerged float would remain poised are found by adding weights and by observing the effect of currents through a solenoid. The method may be adapted to the measurement of the densities of solutions at a series of increasing concentrations by forming the solutions directly in the vessel containing the float.

ISSN:0034-6748    

DOI:10.1063/1.1746023

出版商:AIP    

年代:1951

数据来源: AIP

摘要:

An instrument is described for determining accurately the intensity of an x‐radiation by direct reading. This instrument consists in a small potassium iodide crystal which fluoresces under the action of high energy photons. The light thus emitted is ``piped'' by means of a Lucite rod to a photomultiplier tube. The current generated in the tube is measured by a microammeter.A series of tests on the energy dependence of this detector are reported. It is concluded that the instrument described is suitable for the determination of isodose charts.

ISSN:0034-6748    

DOI:10.1063/1.1746024

出版商:AIP    

年代:1951

数据来源: AIP

摘要:

Transducers are described giving audio outputs greater than 0.1 watt/cm2, sufficient for cellular disruption. A method of measuring the spatial average of the transducer velocity amplitude is discussed. The apparatus is suitable for studies of the effect of frequency and velocity amplitude on the breakdown rate of biological cells.

ISSN:0034-6748    

DOI:10.1063/1.1746025

出版商:AIP    

年代:1951

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1746026

出版商:AIP    

年代:1951

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1746027

出版商:AIP    

年代:1951

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1746028

出版商:AIP    

年代:1951

数据来源: AIP