Light has been the most fascinating entity in my life. Without light there would have been no significant life. Am saying this because light is the source of energy that advanced living things use to process their material needs.
Light is the only fastest entity in the universe. It travels for billions, trillions of miles until we run out numbers and hence we say some distance should be measured using the amount of distance travelled by light over the period of one year. A light year this is huge number. if the light from the sun takes about 8 minutes to reach earth, and you know the distance between the earth and the sun is about 100 million miles (it is not fixed due to the shape of the orbit). Just imagine the distance of one light year!! (you can do the maths).
What is more fascinating is how we can use light for communications.. thats is what am doing it is mind bongling when you open your laptop or desktop and Voiler the pictures appear before your eyes. Using fiber optic cables we can connect the world and you won't need to wait the downloading bar will be a thing of the past. You click and it appears.
Question is how do we do that? Light is made of many individual lights of different wavelength. When you see a rainbow it is the white light broken into its individual components..RED, YELLOW, BLUE beautiful scenery indeed. and that is one of the wonders of light.
More will be coming let me put my device on the probe station I am measuring light output versus injected carriers.
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