Separate IR, Visible, Ultraviolet light

[Whandall]

@kingofxy

i think you have missed the point. the question is can you separate light into IR, Visible, and Ultra Violet light the answer is yes you can.

Nope.

Read the question you asked again.

@kingofxy

Use a prism. Newton used a thermometer to detect "invisible" light. I guess a photo device in a precise place. you could have a one-pixel color detector.
Could you measure the doppler shift of lights in the sky to tell if our sun is lighting them?

And the answer was yes, you can.