emissive power meaning in Hindi

Examples

1. That universal function describes the perfect black-body emissive power ."
2. In some cases, emissive power and absorptivity may be defined to depend on angle, as described below.
3. Kirchhoff's great insight was to recognize the universality and uniqueness of the function that describes the black body emissive power.
4. Then for a perfectly black body, the wavelength-specific ratio of emissive power to absorption ratio is again just, with the dimensions of power.
5. Then for a perfectly black body, the wavelength-specific ratio of emissive power to absorption ratio } } is again just, with the dimensions of power.
6. The effective temperature of the Sun ( 5777 K ) is the temperature a black body of the same size must have to yield the same total emissive power.
7. A perfect black body in thermodynamic equilibrium absorbs all light that strikes it, and radiates energy according to a unique law of radiative emissive power for temperature, universal for all perfect black bodies.
8. Prior to Kirchhoff's studies, it was known that for total heat radiation, the ratio of emissive power to absorptive ratio was the same for all bodies emitting and absorbing thermal radiation in thermodynamic equilibrium.
9. His proof first argued that for wavelength and at temperature, at thermal equilibrium, all perfectly black bodies of the same size and shape have the one and the same common value of emissive power, with the dimensions of power.
10. :" For a body of any arbitrary material emitting and absorbing thermal electromagnetic radiation at every wavelength in thermodynamic equilibrium, the ratio of its emissive power to its dimensionless coefficient of absorption is equal to a universal function only of radiative wavelength and temperature.