Do you know about light and how it moves?
Light is a type of energy that travels in waves, kind of like when you throw a ball and it goes up and down. But instead of going up and down, light waves move back and forth really fast.
Sometimes when light waves hit certain things, like crystals or molecules, they can bounce off in a different way. This is called scattering.
Hyper Rayleigh scattering is a special kind of scattering that happens when certain kinds of light waves hit certain kinds of molecules. These molecules have a special shape that makes them interact with the light waves in a different way.
This interaction can cause the light waves to change direction and even change color. It's kind of like when you play with a prism and the light comes out in different colors.
But there's also something called optical activity, which is when certain molecules can rotate the direction of light waves as they pass through them.
So when you put hyper Rayleigh scattering and optical activity together, it means that certain molecules can both scatter light in a special way and also rotate the direction of the light waves as they pass through.
Scientists can use these properties of molecules to study them and learn more about what they are made of and how they behave.