Infrared radiation has two distinct qualities from visible light.
(a) They absorb through glass, but not through rock salt.
(b) A thermopile or a darkened bulb thermometer is used to identify them because of their heating property.
Infrared radiation has two distinct qualities from visible light.
(a) They absorb through glass, but not through rock salt.
(b) A thermopile or a darkened bulb thermometer is used to identify them because of their heating property.