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The thermal expansion of single crystal magnesium oxide has been measured from 85°K to 480°K. The results are combined with those of Austin, so that data are available from 85°K to 1273°K. The observed thermal expansion of this substance is in excellent accord with the relation, due to...
The plastic properties of shellac is a subject of international interest, but one which has received relatively little study. In this paper, those properties such as polymerization, aggregation, condensation in the presence of chemicals, and adsorption of water, which would affect rheological...
The principles and practical applications of thermionic tubes are discussed at some length in relation to the amplification of direct currents.
An attempt is made to develop a general method of analyzing experimental results concerned with the behavior of elasto‐viscous bodies. It is shown that the transient equation for relaxation processes can be deduced from the experimental impedance formula, and that relaxation experiments are in...
It is possible to produce changes in fluidity of protoplasts by means of the varying shearing stresses to which they are subjected. In consequence of the different fluidity of the objects, the speed of their deformation is dependent upon the pressure or shearing stress used. In further...
The requirements of a high frequency diathermy machine for clinical therapy and for studies of physiological temperature regulation in regard to (1) frequency, (2) measurement of power output, (3) range of power output, (4) efficiency and construction are discussed. To conform with the above...
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