Infrared radiation
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12 Terms
1
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What’s infrared radiation?
It’s a part of the electromagnetic spectrum.
2
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What do all objects do for infrared radiation?
Emit and absorb.
3
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What’s emit and absorb?
Emit is to give out and absorb is to take in.
4
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The higher the temperature of an object does what?
The more infrared radiation it emits in a given time.
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What else is a good emitter in infrared radiation?
A good absorber.
6
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An object at a constant temperature: (1)
Infrared radiation emitted= infrared radiation absorbed.
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An object at a constant temperature: (2)
Infrared radiation is emitted across a continuous range of wavelengths.
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What happens when an object’s temperature increases?
It absorbs infrared radiation at a higher rate than it emits.
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What happens when an object’s temperature decreases?
It emits infrared radiation at a higher rate than it absorbs.
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What does this rule apply to?
Earth.
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What’s a black body to infrared radiation?
A theoretical object that absorbs 100% of the radiation that falls on it.
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What would a black body do to radiation?
It wouldn’t reflect or transmit any radiation but it would be a perfect emitter of radiation.
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