The solar constant (1353W/m^2) is defined as the solar energy falling per unit time at normal incidence on a unit area at the Earth. Take the distance from the sun to Earth as 1.5*10^11m and the diameter of sun as 1.39*10^9m a)caculate the rate of energy generation of the sun b)The surface temperature is around 6000K determine the Stefan-Boltzmann constant in stefan's law from data above. 我的算法是先假设太阳的能量是一个球状的均匀散布,因此由solar constant可以求出 太阳的总功率(1353*4Pi*(1.5*10^11)^2) 然後再除以太阳的表面积可以得到单位面积的功率 最後再根据单位面积功率=σT^4 求出Stefan Boltzmann constant 可是这样算出来跟理论值差满多的(4.86*10^-8,理论值5.67*10-8才对) 不知道是那个步骤有错呢? 还是说纯粹是题目的constant的关系? 烦请各位强者赐教 感激不尽! --

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