Definition: An object, usually made of glass, that focuses or defocuses the light that passes through it.

Alright class, settle down and let’s take a look! Let’s talk about “lenses,” a word we often see. The dictionary tells us, clear as can be: “An object, usually made of glass, that focuses or defocuses the light that passes through it.” Now, what does that really mean? Think for a moment... A lens is like a little window, you see, That bends the light, for you and me! It can bring things closer, sharp and bright, Like when you look at something with all your might. That’s focusing – making things clear and true. Or it can spread the light, make images askew, That's defocusing , a hazy view! Think of glasses on your face, a magnifying glass so neat, They use lenses to help you clearly meet The world around you, bright and bold, A story in light, beautifully told. Does that make sense? Do you have any questions about how lenses work their magic with the light?