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The sun is a very close approximation of an ideal blackbody (it's been called a "real" blackbody), since its actual solar radiation/emission curve is very similar to that of an ideal blackbody emission curve. Ie, with fluctuation, it very nearly absorbs and emits all radiative energy received.
Wiki User
∙ 14y ago
Wiki User
∙ 16y agoThe color of an object depends upon its temperature as predicted by the Stefan-Boltzmann law. This law describes the "ideal" blackbody radiation given off by any object above absolute zero. Every object emits blackbody radiation although you do not normally notice it because our eyes are only sensitive to a very small portion of the electromagnetic spectrum. An object must be quite hot for it to emit visible light. For example, the heating element on a stove glows "red hot". The Stefan-Boltzmann law allows us to determine the temperature by measuring the color spectrum given off by the heating element. Our Sun is an another example of a "real" blackbody radiator. It's spectrum isn't as smooth as the "ideal" (it is pitted and bumpy due to real-world conditions including, but not limited to, absorption of the radiation en route to the earth) but it is close enough.
Wiki User
∙ 16y agoThere is no body in the universe which acts as a perfectly black body(According to classical concept). But,according to me perfectly black body is present in universe.This is explanation: Explanation:
1.A body which has coefficient of absorption=1,coefficient of transmission and reflection=0 is called as perfectly black body.Due to this it will not be able to reflect or transmit any light incident on it,i.e,it will absorb all light which is incedent on it.
2.According to Huygen's wave theory of light, we see object whenever light waves fall on retina of our eyes.
3.But,light wave can not be reflected from perfectly black body,due to this,we can not see it.
4.CONCLUSION:Perfectly black body is present in the universe but we can not see it.
Wiki User
∙ 12y agoThe only thing that would be considered a "black dwarf" is the stellar ash of a white dwarf that has cooled completely. Supposedly, the entire age of the universe so far is not long enough yet for this to have happened. Secondly , the sun is a mid-life main sequence star. It is shining brightly, going about it's business as it has been for 4.5 billion years, and as it will for 4.5 billion more. But some day, the sun will become a white dwarf.
Wiki User
∙ 13y agoThat's right when some body says that the Earth appears blue from space,but what they meant by black body radiation accoriding to Earth they didn't mean it's colour they meant the behaviour,i.e Earth absorbs all radiations comes from any source around it as Stars(which include the Sun),then it totally re-emitts this radiations. and that what is said black body radiation
Dale Mullen
Any object with a temperature about absolute zero is a black body although the efficiency varies significantly.
So, is the earth a black body? Yes, definitely.
Is the earth a perfect black body? No!
Wiki User
∙ 13y agoNo. Our Sun isn't massive enough to become a black hole. Only stars greater than three solar masses can become black holes.
Wiki User
∙ 14y agoNo, the moon is not a blackbody because it reflects all light and radiates none.
Wiki User
∙ 13y agoNot at all. It is quite well lighted, and in fact looks blue from space.
Wiki User
∙ 14y agoNo, it tends to absorb it.
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What is the moon called when it is not reflecting any light?
A black body.
Who was the first black on the moon?
To date no black men or women have walked on the moon.
Who was the first black man to land on the moon?
No black men have been to the moon.
What is Closest heavenly body of the moon?
The Earth is the closest body to the moon.
Who was the first black astronaut to walk on the moon?
To date, no black astronauts have walked on the moon.
What is the moon called when it is not reflecting any light?
A black body.
What color is the sky when you are on the moon?
To an observer anywhere outside the atmosphere of a planet, including on the moon, the sky appears black everywhere except where a star or illuminated body appears.
Who was the first black man to land on the moon?
No black men have been to the moon.
Who was the first black on the moon?
To date no black men or women have walked on the moon.
How do you say black moon in Finnish?
Black moon is musta kuu in Finnish.
When was Black Moon Clan created?
Black Moon Clan was created in 1993.
How do you get bonkers the moshling on mosimonsters?
Bonkers (squirrel with an acorn): Black Daisy + Pink Moon + Black Dragon; or Red Moon + Black Moon + Blue Daisy.Hope you get him!
What is Closest heavenly body of the moon?
The Earth is the closest body to the moon.
Who was the first black astronaut to walk on the moon?
To date, no black astronauts have walked on the moon.
What is the duration of Black Moon Rising?
The duration of Black Moon Rising is 1.67 hours.
When was Black Moon Pyramid created?
Black Moon Pyramid was created in 1995-10.
Is moon a shining body?
The moon is not shining body because it does not release light of its own. In our solar system, only the Sun is a "shining body." The Moon shines by the reflected light of the Sun.
