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How does light travel? What is Light radiation?

How does light travel? First of all, to learn how light travels,we most know what light is. We have been learning from our schools that, light is a kind of energy which gives the sensation of vision. It's true that due to light we see the things, light coming from the sun reflect from a particular thing and then return to our eye, then only we can recognize the object. So, broadly, what is light? Light is a wave and yes, light is also a particle. Light shows both wave and particle nature. Light is a transverse wave and according to Einstein, it contains photon as a particle or a quanta. As light is a wave, it is a source of energy. According to Planck's the energy of wave is given by, EM Wave                 E = hf                         where,         ...