Any
substance will emit radiation of various frequencies, that is,
electromagnetic waves. Experience tells us that when the temperature is
higher the radiation emitted by the material stronger, while the
emitted electromagnetic waves are also more biased towards the major
short-wave length radiation. The so-called blackbody (Blackbody) is the
first in 1860 by the physicist Kirchhoff made by an ideal radiation
radioactive objects, it can absorb all wavelengths of radiation and, in
its internal heat to achieve the perfect balance. Such objects emit
radiation of the type and intensity of its temperature is only related
to the composition of the material with which type of irrelevant. Bold
experiment of a similar object, while the universe of stars, such as
the nature of the sun's radiation is very close to the ideal of the
black body. |
