Black Body

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Diane Kang 2F
Posts: 33
Joined: Fri Sep 28, 2018 12:18 am

Black Body

Postby Diane Kang 2F » Thu Nov 01, 2018 12:16 am

The textbook defines a 'black body' as an "object that absorbs and emits all frequencies of radiation without favor." However, quantum mechanics is all about energy existing in packets and thus limit to certain frequencies, meaning not "all" frequencies of radiation is possible.

Considering quantum mechanics, does the definition of a black body still hold true?

Patrick Cai 1L
Posts: 93
Joined: Fri Sep 28, 2018 12:25 am

Re: Black Body

Postby Patrick Cai 1L » Thu Nov 01, 2018 2:10 pm

Given that blackbody radiation was observed as a macroscopic effect, the generalizations produced by classic blackbody radiation theory holds true for classic mechanics. However, if we were to consider the quantized nature of matter, increasingly specific analyses of blackbody radiation fails at the atomic level, making the blackbody radiation idea void if quantum mechanics are the dominant effect.

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