The new born baby first experienced the light of this world. So let us discuss what Veda says about the light. "Seven horses draw the chariot of the sun, tied by snakes". Rig Veda 5. 45. 9 This verse has a significant meaning about the property of light. The seven horses refer to the nature of light as being composed of 7 rays and the snake symbolizes its curved path. These colors are actually described as red, orange, yellow, green, blue, Indigo and violet in the vadik sutras. Sir Issac Newton (4 January 1643 – 31 March 1727) experimented to split light into its 7 colors by a prism. Before 16th century this was unknown to the western world. And modern science also proved that light is not traveled at a straight line but as a wave pattern just like a snake goes. "Yojananam Dwe Dwe Shate Dwe Cha Yojane Aken Nimishardhena Krammana Namostute” Rig Veda 1,50-4 In the verse Sun light speed is referred with the help of units called YOJAN. It referred that sunlight moves 2202 Yojans in Half Nimish. Calculation part- Unit of Distance: Yojana 1 Yojan = 4 Kose, 0r 1 Yojan = 9 miles Unit of Time: Nimesa 15 Nimish = 1 Kashth 30 Kashth = 1 Kaal ( 30×15 Nimish = 450 Nimish) 30 Kaal = 1 Muhurt ( 450×30 Nimish = 13500 Nimish) 30 Muhurt = 1 Ahoratr ( 13500 × 30 Nimish = 405000 Nimish) 1 Ahoratr = 1 Day (86400 Seconds) 1 Nimish = 0.21333 Second Thus it states Speed of light= 185,796.6531 miles per seconds The modern science says that the speed of light is approximately 186,282 miles per second. So the calculation of Veda is very close to the modern calculation. The modern science says that sunlight contains many types of rays such as, infrared, ultraviolet, X-rays and gamma rays etc. but Veda describes about one hundred thousand different types of rays each possessing specific certain properties.