Keller, William E. Los Alamos Scientific Laboratory, Los Alamos, New Mexico.
Powell, Robert C. Consultant in Physics, Gaithersburg, Maryland.
- Sensitive element
- Microwave bolometers
- Links to Primary Literature
- Additional Readings
A device for detecting and measuring small amounts of thermal radiation. The bolometer is a simple electric circuit, the essential element of which is a slab of material with an electrical property, most often resistance, that changes with temperature. Typical operation involves absorption of radiant energy by the slab, producing a rise in the slab's temperature and thereby a change in its resistance. The electric circuit converts the resistance change to a voltage change, which then can be amplified and observed by various, usually conventional, instruments.
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