## Black Body

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

Donavin Collins 1F
Posts: 66
Joined: Sat Sep 14, 2019 12:16 am

### Black Body

What exactly are black body and black body radiation? Also, when do they come up/are necessary?

Brandon Tao 1K
Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

### Re: Black Body

A black body is a body that absorbs all electromagnetic radiation such that nothing can escape it and no radiation can resist being "sucked in" per say

RasikaObla_4I
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

### Re: Black Body

A black body is a physical body that absorbs all electromagnetic radiation regardless of frequency.

Posts: 53
Joined: Thu Jul 25, 2019 12:17 am

### Re: Black Body

Can someone explain how black body radiation is related to the photoelectric effect?

Nick Lewis 4F
Posts: 111
Joined: Wed Sep 18, 2019 12:18 am

### Re: Black Body

What would be an example of a black body? Is this something people produce out there? I think it sounds like a really interesting topic, but it doesn't sound like it is feasible to be made in real life.

Serena Siddiq 3D
Posts: 51
Joined: Fri Aug 30, 2019 12:17 am

### Re: Black Body

Nick Lewis 3G wrote:What would be an example of a black body? Is this something people produce out there? I think it sounds like a really interesting topic, but it doesn't sound like it is feasible to be made in real life.

Examples of black bodies are the Sun and appliances that get really hot, like a stove since there are numerous transitions of energy overlapping at the same time, emitting and absorbing a broad range of wavelengths.

Technically, they are not man-made, but man-made objects like the stove can allow black-body radiation to occur.

Nathan Rothschild_2D
Posts: 131
Joined: Fri Aug 02, 2019 12:15 am

### Re: Black Body

Where would say a black hole fit in relation to a black body? Seeing as it absorbs all light wavelengths would is be considered a black body?