Stefan's Boltzman's Law|Radiation

Stefan-Boltzman's Law|Questions

Radiation |Prevost's Theory |Remarks |Concept Of Ideal Radiator |Spectral Radiancy |The Stefan- Boltzmann Law |Questions|The Wien Displacement Law |Newton's Law Of Cooling

A body which has a surface area 5.0 cm^(2) and a temperature of 727^(@)C radiater 300 J energy each minute. What is its emissivity? Stefan's Boltzmann's constat is 5.76 xx 10^(-8) Wm^(-2)K^(-4) .

State and explain Stefan's law of radiation.

Wien's displacement law||Stefan's law OF radiation||Rate OF cooling by radiation||Examples on radiation

The famous Stefan's law of radiation states that the rate of emission of thermal radiation per unit by a black body is proportional to area and fourth power of its absolute temperature that is Q=sigmaAT^(4) where A = area, T = temperature and sigma is a universal constant. In the 'energy-length-time temperature' (E-L-T-K) system the dimension of sigma is

According to stefan's law of radiation a black body radiates energy sigmaT^(4) from is unit surface area every second where T is the surface temperature of the black body and sigma = 5.67 xx 10^(-8) W//m^(2) K^(4) is known as Stefan's of as a ball of radius 0.5m When detonated it reaches temperature of 10^(6)K and can be treated as a black body Estimate the power it radiates .

State Stefan-Boltzmann law. Write the CGS and SI units of Stefan-Boltzmann constant.

The power emitted per unit area of a black body is R watt/ m^2 . At what wavelength will the power radiated by the black body be maximum. If the Stefan's constant is sigma and Wien's constant is b, then