(Wien's law: $T\lambda _{max}=\frac{1}{5}C_{2}$ )

405404782 Gabriel Rigole 4F
Posts: 56
Joined: Sat Aug 17, 2019 12:18 am

So what is black body radiation. We briefly talked about it in lecture, but I would like to get a better understanding of it.

Chem_Mod
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Black body radiation is more of physics experiment and is unnecessary to know for this course. Of course, you may investigate what it is for your own enjoyment.

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

More specifically, it's thermal electromagnetic radiation.

faithkim1L
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Joined: Fri Aug 09, 2019 12:17 am

Black body radiation is not necessary to the course. It's more of a physics experiment.

Emma Joy Schaetz 1E
Posts: 43
Joined: Wed Sep 18, 2019 12:16 am

Why exactly is it called "Black Body" radiation?

Ruby Tang 2J
Posts: 102
Joined: Fri Aug 30, 2019 12:15 am

Blackbody radiation is essentially thermal EM radiation. The reason why it is called "blackbody" is because an ideal blackbody (which does NOT exist in nature -- the closest thing would probably be a black hole) absorbs all radiation (and thus reflects none) and appears to be black because of this.

Pablo 1K
Posts: 118
Joined: Sat Feb 02, 2019 12:15 am

It is a concept that can not be made to reality since any material to exhibit the properties is impossible. If all wavelengths are absorbed something can be "invisible".

Nikita Patra 3J
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Joined: Sat Jul 20, 2019 12:16 am

A black body absorbs all radiation, and its emissions depends on its temperature. The emissions are called black body radiation.

105311039
Posts: 107
Joined: Fri Aug 02, 2019 12:16 am

I think you can refer to Black Body Radiation as thermal electromagnetic radiation. However,I know it's more of a physics thing so you will not really need to know specific details.

Chantel_2I
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Joined: Sat Sep 07, 2019 12:19 am

Since a black body absorbs all wavelengths, it does not reflect any and the eye therefore has nothing to detect. For this reason, black bodies, if they existed, would be invisible.

Rosa Munoz 2E
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Joined: Wed Sep 18, 2019 12:21 am

Should we be familiar with the Stefan-Boltzmann law?

Nathan Rothschild_2D
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Joined: Fri Aug 02, 2019 12:15 am

Wait if black body radiation absorbs all radiation then why does it emit any radiation? Why would it not be like how a black hole does not emit any light?

J Medina 2I
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