Photo-reflectance

Photo-reflectance is a big word that means looking at shiny things to learn about them.

Imagine you have a shiny toy car. If you shine a flashlight on it, the light will bounce back and you can see where the light hits the car.

Photo-reflectance is like shining a light on things, but instead of a flashlight, special machines use light from lasers. These lasers are very precise and can measure how shiny something is.

Scientists use photo-reflectance to learn about all different kinds of things, like computer chips, solar cells, and even medicine. They can use the shiny measurements to figure out how well things are working and if they need to be fixed or improved.

So, photo-reflectance is like shining a laser light on things to measure how shiny they are and learn about how well they work.