Question

why can't we see the
light stay path when we use
lemote Constrol of a T.v. ?​

Answer 1

Answer:

Because they use infrared light which isn't visible

Answer 2

Explanation:

Good quality cameras employ good IR filters and in those you will not be able to see the TV remote light. A common wavelength for an IR emitter for a remote control is 980 nm. The human eye can only detect wavelengths up to about 725 nm efficiently, so we don't see the beam from the IR remote.