How can we observe if an object is a color we can’t see?

Question

From what I understand, humans can see red green and blue and everything in the middle. Some animals I’ve heard see more colors than us, so what’s to say that some things in nature are colors that we don’t see? Who’s to say that some apples are red? And instead a different color that we don’t have a name for because we can’t process it?

How can we tell if this “apple” is as a matter of fact “red”.

In: 75

Answer 1

Through science, we can build sensors to detect and allow you to see light in other bands outside of our normal vision. This would allow you see and observe that light, probably in more ways than you ever could if you could see it naturally.