noun
- a sensitive instrument that measures the intensity of radiant energy, especially infrared radiation, by detecting the change in electrical resistance of a material when heated
Usage: scientific; physics
Examples
- The astronomer used a bolometer to measure the heat radiation from distant stars.
- Scientists calibrated the bolometer before beginning their infrared observations.
- The bolometer detected minute changes in thermal radiation from the sample.
- Researchers employed a superconducting bolometer for their cosmic microwave background studies.
- The laboratory’s new bolometer could measure extremely small amounts of radiant energy.
- Engineers designed a more sensitive bolometer for the space telescope’s instruments.