The essay ,according to the works of Albert Einstein and the documentary materials about the conception of light quantum, explores the close relationship between the conception of light quantum and the theory of Wien s equilibrium radiation as well as the thinking method and process of the conception of light quantum put forward by Albert Einstein.

Using the IOP,FOP data of GAME-Tibet and HEIFE,the temporal variations of the climatological features of the parameters of the radiation balance of the north of the Tibet Plateau and the desert in HEIFE were calculated and analyzed.

The distributions of annual mean radiation balance .

The data related with radiation,aqueous vapor,and air temperature collected at the urban and suburban sites in Nanjing from 17 February to 2 March,2006 are used in this paper to analyze the radiation budget over urban and suburban different underlying surfaces,and the changes of each component,as well as their differences.

The solar radiation budget and energy balance were anlysed based on a long time series observation in an automatic station setted on the ELA of the glacier.

For a semitransparent graded index medium with absorbing-transmitting boundary surfaces, the physical and mathematical models of thermal radiation transfer in medium and thermal radiation equilibrium on boundary surfaces are founded.

The formulae of statistical theory of entropy of nonequilibrium radiation which have been cited extensily in various references are applied to calculate the entropy density of isotropic and anisotropic euilbrium radiation respectively.