Suppose two beams of white light are shone on a white screen with one beam being shone through a red pane of glass and the other being shone through a blue pane of glass. What color appears on the screen when the two beams overlap? What will happen if the two panes of glass are placed in the path of a single beam?
2007-03-12 14:45:10 · 2 answers · asked by Jackie3421 2 in Science & Mathematics ➔ Physics
You are adding light with two different spectral compositions. The result will be the sum of the two spectra. To the human eye, it will look purple, nearly indistinguishable from light from a purple source.
If you shine light through both panes, the red will pass only the red light and the blue will pass only the blue light. If the filters are perfect, no light will penetrate.
2007-03-12 17:13:04 · answer #1 · answered by Frank N 7 · 0⤊ 0⤋
blue and red combine to make purple.
2007-03-12 14:59:49 · answer #2 · answered by Anonymous · 0⤊ 1⤋