What is the radiation of the black body?
In physics, the black body is an object that absorbs all electromagnetic radiation, which is purely non -reflective and opaque. In accordance with this, its color is only dictated by its temperature. Different temperatures reflect atoms around different intensities that correspond to the appropriate wavelengths that are produced by electromagnetic radiation. Black bodies and problems around their radiation are particularly known for their role in formulating quantum mechanics at the beginning of the 20th century.
black bodies is sometimes called spiritual radiation, because in the laboratory the closest approximation to the black body is a small hole associated with a larger cavity. Because any incoming light must be reflected several times around the interior of the cavity to bounce back, during which it is almost certain that it is absorbed, the hole of the cavity nicely approximates the criteria of non -reflectivity for the black bodies. According to Gustav Kirchhoff, a physicist who in 1860 the spectrum emitted from the whole emits the concepts of "black body" and "radiation of the black body" will only depend onThe temperature of the cavity and not at all on specific materials that heat up. Approximately 1000 hp (Kelvin, the same as Celsius, but 0 is absolute zero, –273.15 ° C), the black body radiation is red, from 2000 K 4000 K is orange and then begins to embodiment at temperatures of about 4000 K, in which all typical substances in liquid form are.
in the real world is the closest approximation of the black bodies of the space microwave, the "echo" of the Big Bang. The black holes can be described as a black bodies and it was Stephen Hawking, who found that they radiate their own black body radiation - called Hawking Radin's honor.
Attempts to characterize the emission spectrum of black bodies of radiation led by scientists such as planck and einstein to indicate that electromagnetic radiation is quantized, which eventually led to the revolution of quantum mechanics.