because its blue. derrr
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.
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".
You get light blue.
Light blue and white make a pastel blue color. Mixing white with light blue lightens the shade and creates a softer, more muted tone.
Since the filter allows only blue light to pass through, anything you see through the filter appears either blue or black. Blue if there's any blue light coming from it, or black if there isn't any.
Light blue. A light blue Azure Blue.
Something appears blue because it reflects blue light while absorbing other wavelengths of light. White light is composed of a combination of all different colors of light, but when an object reflects mostly blue light, our eyes perceive it as blue.
White light is composed of various colors, including blue. When white light strikes blue pigment, the blue pigment absorbs most colors of light except for blue, which is reflected back to our eyes, making the pigment appear blue.
Blue and white!
mix blue with white
Blue and white mixed together equals light blue. (much more of white than blue).
Blue is perceived by the human eye when certain wavelengths of light are reflected off an object, while white is a combination of all visible wavelengths of light being reflected. When blue light is mixed with white light, the blue light is still visible but may appear lighter or more subdued due to the presence of the white light.