infra red radiation Flashcards
1
Q
what is infra red radiation?
A
the emission of electromagnetic waves.
it is emitted from the surface of an object
2
Q
an object that’s cooler than its surroundings will absorb more radiation than it emits (as it warms up).
A
an object that’s hotter than its surroundings will emit more radiation than it absorbs. (as it cools down)
3
Q
what does infra red radiation mainly depend on?
A
surface colour and texture of an object
4
Q
what do dark, matt surfaces do with radiation?
A
they absorb it
they emit much more of it
5
Q
what do light shiny surfaces do with radiation?
A
they reflect a lot of it
