A red filter blocks every color except red from getting through, so you would see red.
A red filter will absorb all but the red wavelength of light. A blue filter absorbs all but blue light. So the blue filter will absorb the red wavelength and no light will shine through.
= Sorry I mean = = I have the warning light telling me that I have water in fuel filter on my 1994 diesel Peugeot 306. Do I need to change the fuel filter if so can some one please tell me where the fuel filter located and would I have to reprimand it =
the mirror would be broken!!!
A cyan filter will pass green light. In fact, you could pass the light through a cyan filter AND a yellow filter and it would be unchanged.
Mostly green.
An emitter of blue light shining on/through a red filter.The red filter appears red because it block all light except red. So trying to shine blue through it should attenuate the blue heavily. Only red can pass through the red filter easily.
what happen if there is no light house
You would see the Sun being occulted by the Moon.
Nothing at all
It depends on what kind of filter, e.g. a blue filter absorbs everything except blue light, so only blue light comes out, which is why the filter looks blue, and is referred to as a "blue filter".
When you looked at Medusa, you were turned into stone. The hero Perseus beheaded her, using a mirror shield.
They would die.