perfect black body meaning in Hindi

Examples

1. The star and the planet are considered to be perfect black bodies.
2. Kirchhoff's perfect black body absorbs all the radiation that falls upon it.
3. Planck also noted that the perfect black bodies of Kirchhoff do not occur in physical reality.
4. If the planet were a perfect black body, it would emit according to the Stefan Boltzmann law
5. If stars were perfect black bodies, the stellar locus would be a pure straight line indeed.
6. The concept of the black body is an idealization, as perfect black bodies do not exist in nature.
7. Kirchhoff's proof considered an arbitrary non-ideal body labeled as well as various perfect black bodies labeled.
8. That ratio is equal to the emissive spectral radiance of a perfect black body, a universal function only of wavelength and temperature ."
9. It is called " black " because it absorbs all the light that hits it, reflecting nothing, just like a perfect black body in thermodynamics.
10. The Earth in fact radiates not quite as a perfect black body in the infrared which will raise the estimated temperature a few degrees above the effective temperature.