Abstract

A form of iron clad Thomson astatic galvanometer of high sensibility is described. It differs from the types described in the literature in that it is semi-portable, has a removable core containing coils and suspended magnetic system, has comparatively small weight and is easily adjusted to a high sensibility.

© 1922 Optical Society of America

An Improved Form of Nichols Radiometer

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Recent Measurements of Stellar and Planetary Radiation1

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A New Form of Electrostatic Voltmeter

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On Construction of Platinum Thermometers and of Resistance Coils

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Review of the Present Status of the Two Forms of Quantum Theory*

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