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Curious behaviour of a proton magnetometer

Published online by Cambridge University Press:  24 October 2008

E. C. Bullard ,
C. S. Mason  and
J. D. Mudie
E. C. Bullard
Affiliation:
Department of Geodesy and Geophysics, Cambridge University
C. S. Mason
Affiliation:
Department of Geodesy and Geophysics, Cambridge University
J. D. Mudie
Affiliation:
Department of Geodesy and Geophysics, Cambridge University
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Extract

1. Introduction. This Department has made extensive observations with a proton magnetometer towed behind a ship (Hill (2)). The magnetometer consists of a bottle of water surrounded by a coil of wire through which a current flows and produces a polarizing field of about 100 oersted. A small proportion of the protons in the water are polarized along the resultant field. When the current is turned off they precess about the Earth's field and produce in the coil an e.m.f. whose frequency is a measure of the field.

Information

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 60 , Issue 2 , April 1964 , pp. 287 - 293
Copyright
Copyright © Cambridge Philosophical Society 1964

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References

REFERENCES

(1)Abragam, A.The principles of nuclear magnetism (Oxford Clarendon Press, 1961).Google Scholar
(2)Hill, M. N.Deep Sea Research, 5 (1959), 309–311.CrossRefGoogle Scholar