What does the German flag look like under a blue filter?

Answer 1

The top (Black) will look black, the middle (Red) will look black and the bottom (Yellow) will look black. So basically, it will all look black because firstly, for red, red and blue are both primary colours and if 2 or 3(green) primary colours mix, the colour looks black. Secondly, for yellow, its made up of 2 primary colours (red and green) and they are both primary colours and, again, if 3 primary colours mix, they make black. Finally, Black will look the same, because black light is actually no light at all.

Source:

Completed a light test and topic at school.

Doing a piece of homework to do with light.