: Why is a UV light sometimes called a black light?

Question

: Why is a UV light sometimes called a black light?

In: Physics

Answer 1

becuase its a wavelength our eyes are unable to see. so it looks black in the dark, but other objects that react to it shine.

so basically its light thats “black” becuase we cant see it. but we know its light because its reflects off things which react to UV light.