A red filter blocks every color except red from getting through, so you would see red.
If you put a blue filter in the path of a ray of light, the filter would absorb all colors of light except for blue. This would result in the light passing through the filter appearing blue in color.
I'm guessing it was probably the GREEN light, and that somehow it had something to do with why the filter was named a "GREEN" filter, and why when you looked at it, it looked GREEN.
If a red light is shined through a blue filter, the blue filter would absorb the red light since it is not in the transmitted light spectrum. This would result in very little to no light passing through the blue filter, creating darkness or a very dim output depending on the intensity of the red light source.
If you place a blue filter in the path of light coming through a red filter, the blue filter will absorb or block the red light, potentially resulting in less intense light or a different color of light that is transmitted through. The combination of the two filters will likely produce a color that is a mix of the two original colors, such as purple or magenta.
= 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!!!
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".
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.
You would see the Sun being occulted by the Moon.
Nothing at all
Only the green portion of the white light would pass through the green filter. The filter absorbs all colors except green, allowing only green light to pass through.
Using a blue filter for spectroscopy would selectively transmit blue wavelengths of light while blocking other wavelengths. This would result in the spectrograph only detecting and recording blue light emitted or absorbed by the sample being analyzed, leading to a limited spectral range in the data collected.