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red because red through red makes red! ;)

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14y ago

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When light goes trhough a red filter the colour that comes trough is?

When light passes through a red filter, the color that comes through is red, as the filter absorbs other colors of light and only allows red wavelengths to pass through.


What colour comes through when a red light passes through a blue filter?

Nothing comes through. A red light emits no blue light, and a blue filter allows only blue light to pass ... that's why when you look at it, you say to yourself "Hey! That filter looks blue. I'll call it a 'blue filter'."


What colour will you see shone a red light through a blue filter?

When shining a red light through a blue filter, the light that passes through will appear black. This is because the blue filter only allows blue light to pass through, while blocking red light.


What colour does a red light look when seen through a blue filter?

When red light passes through a blue filter, it appears dark or nearly black. This is because the blue filter only allows blue light to pass through and absorbs other colors, including red. Since red light cannot be transmitted through the blue filter, it effectively gets blocked.


What is the colour of a blue car appear on yellow light?

black because blue light cannot pass through a yellow filter


What color of light does a red filter allow to pass through it?

A red filter allows red light to pass through, while absorbing or blocking other colors of light. This property is based on the filter's ability to selectively transmit certain wavelengths of light while absorbing others.


What color of light is produced when red light is added to green light?

The red light is absorbed by the green filter and therefore no light passes through the filter


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".


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 happens to light when it passes through a red filter?

After pure, white light passes through a red filter, all the other colors in the spectrum will flow out of the other side. My mistake, I had a faulty source. A red light filter will cause the image to appear as different shades of red. Since it is a red filter only red light can pass through. So you finish up with red light. Whether it is focussed to an image or not is of no consequence. As to different shades of red, you will get the shade of red that is passed by the filter.


What colour does red appear when seen through a blue filter?

The reason we call a blue filter a "blue filter" is that it looks blue. The reason it looks blue is that blue light is the only kind of light that can go all the way through it. Any other color of light gets absorbed in the dyes between the layers of the filter, and never comes out the other side. If you shine red light at one side of a blue filter, the other side of the filter looks dark, as if nothing is shining through it. And if you look at a 'red' sweater through a blue filter, the sweater looks black.