Bolometer

Okay kiddo, a bolometer is like a super sensitive thermometer that can measure tiny amounts of heat. Think of it like a superhero with really good hearing- it can hear even the tiniest sounds that regular people can't hear.

Instead of listening to sounds, a bolometer feeling temperature change. When light or heat hits the bolometer, it absorbs the energy and gets warmer. By measuring this tiny temperature change, scientists can learn things about the light or heat that hit the bolometer- like how much energy it had.

Bolometers are really important for studying things in space, like stars and galaxies. They help scientists learn how much energy is being emitted by these objects, which can give us clues about their size and age. They're also used for things like measuring body temperature and detecting radiation. So, in short, bolometers are like super sensitive, heat-measuring superheroes that help scientists learn things about the world around us.