Our sense of sight is one of our most important links with the world. We can see thousands of colours and shapes which help us to recognize the people, places and things around us. But our eyes are limited. Not until the discovery of lenses were we able to see the things which were either too small or too far away for our eyes to focus on.
Telescopes enable us to see faraway objects such as galaxies.
Lenses in microscopes allow us to see tiny forms of life, helping us to understand how living things function. And lenses in telescopes have enabled us to understand something of the solar system, and the universe, of which we are a tiny part. You will learn how a special type of light, laser light is changing our lives.
Picture Credit : Google