Thermographic cameras detect radiation in the infrared range of the electromagnetic spectrum (roughly 900–14,000 nanometers or 0.9–14 μm) and produce images of that radiation. Since infrared radiation is emitted by all objects based on their temperatures, according to the black body radiation law, thermography makes it possible to "see" one's environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature, therefore thermography allows one to see variations in temperature (hence the name). COUNT 5
QSN1 What is the range of the electromagnetic spectrum in micrometers? ANS1 0.9–14 QSN2 In nanometers, what is the electromagnetic spectrum's range? ANS2 900–14,000 QSN3 What law states that infrared radiation is emitted by objects based on temperature? ANS3 the black body radiation law QSN4 What happens to the amount of radiation an object emits as temperature increases? ANS4 increases QSN5 What type of cameras see infrared radiation? ANS5 Thermographic