Which of the following thermometers measures temperature from the thermal radiation emitted by objects?
A. Pyrometer thermometer
B. Platinum resistance thermometer
C. Thermocouple thermometer
D. Constant pressure gas thermometer
Correct Option: Answer is A
A pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface. It does this by measuring the thermal radiation or infrared energy being emitted from the object. Therefore, a pyrometer thermometer measures temperature from the thermal radiation emitted by objects.