Which is the biggest radiation mode of heat transfer ? How much degree temperature Sun radiates on daily basis.

 

         Sun is the biggest radiation mode of heat transfer, You can feel the heat transfer from a fire and from the Sun. Similarly, you can sometimes tell that the oven is hot without touching its door or looking inside—it may just warm you as you walk by. The space between the Earth and the Sun is largely empty, without any possibility of heat transfer by convection or conduction. In these examples, heat is transferred by radiation.

          That is, the hot body emits electromagnetic waves that are absorbed by our skin: no medium is required for electromagnetic waves to propagate. Different names are used for electromagnetic waves of different wavelengths: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

 

Temperature Sun radiates on daily basis?

       At any moment, the sun emits about 3.86 x 10²⁶ watts of energy. So add 24 zeros to the end of that number, and you'll get an idea of how unimaginably large an amount of energy that is!

   The surface of the Sun has a temperature of about 5,800 Kelvin (about 5,500 degrees Celsius, or about 10,000 degrees Fahrenheit). At that temperature, most of the energy the Sun radiates is visible and near-infrared light.