Letter | Published:

A Comprehensive Fundamental Electrical Formula

Nature volume 143, page 601 (08 April 1939) | Download Citation

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Abstract

DR. C. V. DRYSDALE has pointed out that his formula1 can be applied to the calculation of what are usually called ‘electromagnetic forces’; and it then becomes an expression (in vector notation) for the generally accepted principle called the Biot-Savart law. But the experiments to which I referred in NATURE of August 7, 1937, have shown that the Biot-Savart law sometimes indicates only a small fraction of the actual force, and have therefore shown the serious incorrectness of the more general formula proposed by Dr. Drysdale.

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References

  1. 1.

    NATURE, 142, 995 (1938).

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  1. 46 Grosvenor Road, Birmingham, 20. Jan. 30.

    • W. F. DUNTON

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DOI

https://doi.org/10.1038/143601a0

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