What is a new technological advances of an infrared?
What is a new technological advances of an infrared?
Infrared astronomy started centuries ago, when Sir William Herschel proved that there was more radiation from the Sun than what can be seen in visible light. If you spread out the sunlight with a prism, just beyond where the red colors are, there is radiation there that we cannot see that will warm things up (a thermometer, for instance). We knew that there was some other radiation to measure, but Herschel’s thermometer was pretty basic. We cannot learn much about radiation from a thermometer. Later on, people started developing thermocouples and bolometers that were sensitive enough to sense the much lower levels of infrared radiation that stars and planets produce compared to the Sun. At that point very interesting things about a variety astronomical objects could be studied.
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