Dispersion (optics)

Okay, let me tell you a story. Remember when you saw a rainbow and how it has different colors? That is dispersion.

Now, let's dig deeper. Dispersion is a word that we use to describe what happens to light when it passes through something like a prism, water droplets or a diamond.

You see, when light hits something, it slows down a bit and as a result, it bends a little bit. But not all colors of light bend the same way. Red bends less than blue, and this is called refraction.

When light passes through something like a prism, it gets separated into different colors because they bend at different angles. This is why we see a rainbow of colors.

We can also use dispersion in other ways, like in optical fibers. These are tiny wires that can carry information using light. The different colors of light can be used to transmit different pieces of information at the same time, making it super fast!

So, dispersion is just a fancy way of saying that light can be split into different colors when it passes through certain materials.