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Saturday 27 July 2013

WHY EARTH IS NOT IN THERMAL EQUILIBRIUM WITH SUN ?




SIR SADIQ DIL SAHAB ANSWERING QUESTION

QUESTION :SIR  WHY IS THE EARTH NOT IN THERMAL  EQUILIBRIUM  WITH SUN ?

ANSWER : The earth is not in thermal equilibrium with sun ; because while earth is being warmed by absorbed  radiant  energy, it is also losing heat in various ways (eg re-radiation ,
Conduction , Convection and evaporation ). moreover ,they are not in PERFECT THERMAL CONTACT with each other.The average temperature of the earth is About 300 Kelvin(unit of temperature)

PICTURE SHOWING THE REAL REASON 


SUN AND EARTH THERMAL LOSS



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