Science Fair Project Encyclopedia
Proton magnetometer
A proton magnetometer measures very small variations in the earth's magnetic field allowing ferrous objects on land and at sea to be detected.
They are used in land-based archaeology to map the positions of demolished walls and buildings and at sea to locate wrecked ships for recreational diving.
The proton magnetometer consists of a coil surrounding a proton-rich material such as a cylinder of paraffin / kerosene. A measurable electric current is induced in the coil by the realignment of the protons in the paraffin as the magnetometer passes through a changing magnetic field.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details