Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: Constants
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chemicaltester (440)

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1)the total energy radiated per unit surface area of a black body in unit time is proportional to the fourth power of the temperature in kelvin.
here the constant of proprtionality is stefans constant
its value is5.670400×10?8 W·m-2·K-4


3)there is an inverse relationship between the wavelength of the peak of the emission of a black body and its temperature.
here the constant of proprtionality is weins constant such that
max wavelength =b/t where b is constant

2)A heat current is a kinetic exchange rate between molecules, relative to the material in which the kinesis occurs. A specific pattern of collisions among molecules, similar to a river bed effect on the direction of water travelling therein. (taken from wikipedia)
value of b is 2.897768 5(51) × 106 nm K.

2)
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