Gravity gradiometer

Details Gravity gradiometer Gravity gradiometer

2007-08-27

2009-12-01

Kwok, Helen C. (Department: 2856)

Measuring and testing

Gravitational determination

C073S38200R, C073S514310

Reexamination Certificate

active

07624635

ABSTRACT:
A heat switch570is disclosed as well as a gradiometer having the heat switch. The heat switch is formed from a non-magnetic material such as a semi-conducting material. The semi-conducting material may be provided by way of a Hall effect device. The heat switches are arranged in the gradiometer on a circuit board856. The circuit board850has conducting strips856which are connected to conducting strips on a sensor71by bridges852. The heat switch570is connected on the opposite side of the circuit board850to the strips856and processing circuitry859. A copper substrate865is provided on the same side of the circuit board as the heat switch570to conduct heat away from the heat switch570when the heat switch is closed.

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