Basic purpose of this lecture is to present on Visible Light and Color. Here major focus on how do we perceive colors. Visible light is a smallest part of the EM spectrum that the human eyes can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. This lecture also focus on what are the different colors of visible light: Red – lowest energy, longest wavelength; Orange; Yellow; Green; Blue; Indigo and Violet – highest energy, shortest wavelength.