I Am the Speed of Light 'c', You 'See'...!

The accurate measurement of speed of light is of great importance in understanding various concepts in Physics in particular and science in general. In Physics we come across various concepts and applications in which high degree of accuracy of speed of light becomes important. In this article we discuss the various attempts made to determine the speed of light in a chronological order and then significant roles played by speed of light in physical theories has been discussed.