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In many books it is written that light is an electromagnetic wave, as we know there does not exist any oscillator that can oscillate an electron with a frequency of light.
My question is, how can we prove that light is electromagnetic in nature? what is light ? is there any physical meaning. Edit -after reading the articles i have one more question since light also carry heat radiation, heat can only transfer when there is a temperature difference, it mean light and heat both are same thing because we do not know about temperature of space so how can sun heat radiation can reach us A big EDIT -as my question about light is already answer by most of all ,BUT MY QUESTION WAS HOW HOW A LIGHT CARRY THERMAL ENERGY