An apple is red because it reflects red light and absorbs blue and green light. Why does red cellophane look red in reflected light?
Why does red cellophane make a white lightbulb look red when you hold the cellophane between your eye and the lightbulb? What happens to the blue and green light?
Why does red cellophane make a white lightbulb look red when you hold the cellophane between your eye and the lightbulb? What happens to the blue and green light?
1 Answer
Jun 13, 2017
The cellophane is acting as an absorption type optical filter .
Explanation:
Question 1:
Why does red cellophane make a white lightbulb look red when you hold the cellophane between your eye and the lightbulb?
Answer :
Because the cellophane acts as an absorption type optical filter that only allows the red light to pass.
Question 2:
What happens to the blue and green light?
Answer:
As the name "absorption optical filter" implies, the cellophane absorbs all wavelengths of light except red.
