1. Potassium ferrioxalate) can be used as a chemical Actinometer, while bolometers, thermopiles, and photodiodes are

2. For example, solutions of iron(III) oxalate can be used as a chemical Actinometer, while bolometers, thermopiles, and photodiodes are physical devices giving a reading

3. ‘On the thermal side are thermocouples, thermopiles, Bolometers, and pneumatic detectors.’ ‘During a routine check for contamination in their Bolometers, which happen to be built around crystals containing bismuth, the team noticed an unexpected alpha decay not listed in any reference tables.’