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Then it wouldn't be a very good red filter.
At first blush this appears to be an exceedingly stupid question, but actually while there is in fact such a thing as a stupid question (trust me on this), the advance of science is basically a history of something that "couldn't happen" (according to the currently accepted laws of science) happening, and someone having to come up with a better theory to account for it.
In actual practice, a lot of "red" filters do pass a significant amount of light in the blue region of the spectrum. The amount that gets through is based on the precise hue and saturation of the filter. If it lets through a lot of red and a lot of blue but almost no green, then it's a violet/purpleish red filter. If it lets through a lot of red and a lot of green and blue (but less than the amount of red), it's a pink filter. And so on.
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What would happen if a light with a red filter was shined through a blue filter?
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.
If white light were shone through a green filter which light would pass through the filter?
Mostly green.
What happens to green light if it passes through a cyan filter?
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.
What would happen when a blue light shines on a red 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.
Does blue and red light pass through a blue filter?
If red light passed through the filter, then it would not be a blue filter. When a broad range of colors encounters the blue filter, by far the greatest share of the light that comes out of the other side is blue light, with very small amounts of other colors.
What would happen if a light with a red filter was shined through a blue filter?
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.
What would happen if you looked at a red light with a red filter?
A red filter blocks every color except red from getting through, so you would see red.
If white light were shone through a green filter which light would pass through the filter?
Mostly green.
What happens to green light if it passes through a cyan filter?
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.
What would happen when a blue light shines on a red 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.
What happened to light that is both vertically and hrizontally filtered?
If light passes first thorugh a vertical polarization filter, then through a horizontal polarization filter, hardly any light would get through at all.
Does blue and red light pass through a blue filter?
If red light passed through the filter, then it would not be a blue filter. When a broad range of colors encounters the blue filter, by far the greatest share of the light that comes out of the other side is blue light, with very small amounts of other colors.
What color would white light appear viewed through red filter and pure blue?
Red or blue. The reason a red filter looks and is red, is because only red light comes through it, and the same can be said about a blue filter allowing only blue light through. Other colors are absorbed by the dyes in the filter. If white light enters a red filter, then red light comes out, and the same goes for blue.
What color would white light appear viewed through filter?
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".
How can you filter out only green light?
you use a green filter in front of the light and you should just get green light passing through as all the other colours are absorbed by the filter. the filter would just be a sort of plastic thing which is green in colour :)
What would you see when white light passes through purple then red filter?
blue
What color would a blue shirt be if seen through a green filter?
A filter removes certain colors of light which pass through it. The primary colors of light are green red blue. Since the shirt absorbs all but blue light and the filter removes all but green it will appear black.
