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Black Body

Posted: Mon Oct 07, 2019 9:07 pm
by Savannah Mance 4G
I know that a black body is an idealized object that absorbs all incoming light. But does it also hypothetically reflect light as well? And if so does it reflect light of all wavelengths?

Re: Black Body

Posted: Mon Oct 07, 2019 9:27 pm
by Mashkinadze_1D
To the extent of my knowledge, black bodies do not reflect light, only absorb. This being said, Professor Lavelle mentioned that this is much more so a physics concept and we should not worry heavily on memorizing or understanding it.

Re: Black Body

Posted: Tue Oct 08, 2019 10:19 am
by Diana_Diep2I
A black body only absorbs. I think it's like being in a dark room, where you can't see anything because it is all black and nothing is reflected. A white body reflects

Re: Black Body

Posted: Tue Oct 08, 2019 11:02 am
by Hannah Romano 4D
Although light and heat energy are not the same, they often go hand in hand. Does this mean that if a black body object absorbs all light, will it also become very hot? Or are these two forms of energy unrelated in this example?

Re: Black Body

Posted: Tue Oct 08, 2019 11:23 am
by Yiyang Jen Wang 4G
I think professor mentioned in class that the perfect black body that can absorb all frequencies of light does not currently exist. Cuz if we can still see it, it must has reflected some sort of frequencies which are able to be detected by our eyes, or it will just be invisible. Plz correct me if I am wrong.

Re: Black Body

Posted: Wed Oct 09, 2019 12:15 pm
by Astrid Lunde 1I
Yiyang Jen Wang 4I wrote:I think professor mentioned in class that the perfect black body that can absorb all frequencies of light does not currently exist. Cuz if we can still see it, it must has reflected some sort of frequencies which are able to be detected by our eyes, or it will just be invisible. Plz correct me if I am wrong.

That would make scene because if we can still see it it has to be reflecting some form of light frequency.