Anonymous Coward User ID: 70807988 United States 11/28/2015 05:02 PM Report Abusive Post Report Copyright Violation | Black Body Radiation... Black Hole Sun, won't you come... Black-body radiation is the type of electromagnetic radiation within or surrounding a body in thermodynamic equilibrium with its environment, or emitted by a black body (an opaque and non-reflective body) held at constant, uniform temperature. The radiation has a specific spectrum and intensity that depends only on the temperature of the body.
The thermal radiation spontaneously emitted by many ordinary objects can be approximated as blackbody radiation. A perfectly insulated enclosure that is in thermal equilibrium internally contains black-body radiation and will emit it through a hole made in its wall, provided the hole is small enough to have negligible effect upon the equilibrium.
A black-body at room temperature appears black, as most of the energy it radiates is infra-red and cannot be perceived by the human eye. Because the human eye cannot perceive color at very low light intensities, a black body, viewed in the dark at the lowest just faintly visible temperature, subjectively appears grey (but only because the human eye is sensitive only to black and white at very low intensities - in reality, the frequency of the light in the visible range would still be red, although the intensity would be too low to discern as red), even though its objective physical spectrum peaks in the infrared range.When it becomes a little hotter, it appears dull red.
Behold, the moon is the black sun! |
JusTrollin
User ID: 70905431 United Kingdom 11/28/2015 05:06 PM Report Abusive Post Report Copyright Violation | Re: Black Body Radiation... Black Hole Sun, won't you come... That would be an ecumenical matter |
Anonymous Coward User ID: 70884179 Israel 11/28/2015 05:10 PM Report Abusive Post Report Copyright Violation | Re: Black Body Radiation... Black Hole Sun, won't you come... In Messianic times to come "the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of the Seven Days......" (Isaiah 30:26) |
Anonymous Coward (OP) User ID: 70807988 United States 11/28/2015 05:16 PM Report Abusive Post Report Copyright Violation | Re: Black Body Radiation... Black Hole Sun, won't you come...
Because the human eye cannot perceive color at very low light intensities, a black body, viewed in the dark at the lowest just faintly visible temperature, subjectively appears grey (but only because the human eye is sensitive only to black and white at very low intensities - in reality, the frequency of the light in the visible range would still be red, although the intensity would be too low to discern as red), even though its objective physical spectrum peaks in the infrared range. "When it becomes a little hotter, it appears dull red." BLOOD MOON |
Anonymous Coward (OP) User ID: 70807988 United States 11/28/2015 05:21 PM Report Abusive Post Report Copyright Violation | Re: Black Body Radiation... Black Hole Sun, won't you come... Fucked up, ment to say BLACK HOLE SUN |
Anonymous Coward User ID: 70917668 United Kingdom 11/28/2015 08:20 PM Report Abusive Post Report Copyright Violation | Re: Black Body Radiation... Black Hole Sun, won't you come... That would be an ecumenical matter
Quoting: JusTrollin Arse ! Drink ! Fek ! Gurls ! I'm a happy camper. |