Hey there! Do you know what paper is? It's a thin material that we use to write or draw things on. Now imagine if that paper could reflect light like a mirror! That's what reflectance paper does.
Basically, reflectance paper has special chemicals on it that make it shiny and reflective. When light hits the paper, it bounces off of the shiny surface and back into our eyes. This makes the paper look like it's glowing or shining, kind of like a lightbulb!
People use reflectance paper for all sorts of things. Sometimes it's used in photography to help capture the right amount of light. Other times, it's used in science experiments to measure how much light is reflected off of different surfaces. And sometimes, it's even used in art projects to create cool, reflective designs!
So there you have it - reflectance paper is just like regular paper, but it's super shiny and reflective. Pretty neat, huh?