When white light falls on a blue colored translucent material and passes through it the light changes its color into blue.Similar phenomenon is observed when yellow light passes through red glass in a car's back lights.Why does this happen?Why does the color of light change?
[Physics] White light to blue light
visible-light
Related Solutions
Some 3D glasses use narrow-band filters rather than polarization, which is quite clever.
See http://en.wikipedia.org/wiki/Dolby_3D for details.
The reason the light looked different through each eye is that the light spectrum isn't uniform across the visible wavelength. Thus, when different parts of that spectrum are viewed (through the left or right lenses), you get light that's not quite white, and not quite the same.
[Physics] Why does a glass window reflect white objects white from an atomic scatterers’ viewpoint
The amount of reflected light is predicted by Fresnel's equations. The equations are a little cumbersome, but they tell you that the fraction of light reflected depends on the index of refraction of the two materials, as well as the angle of incidence.
One thing though, is since the index of refraction changes with the wavelength of light, then the amount of reflected light also changes with the wavelength!
Realistically though, the index of refraction barely changes at all over the visible spectrum.
In this image, the orange band is the visible spectrum. Those materials labeled "crown" are different types of glass. The range of the index of refraction for these glasses is only about 0.02 or 0.03 over the visible spectrum.
In other words, the glass barely notices the different colours. It reflects all visible light almost identically.
Best Answer
White light is a mixture of all wavelengths in visible spectrum. The blue glass has a property to absorb all colors except blue.Hence only blue is transmitted and thus the light seems to be blue.Similarly that yellow light might not be pure ad must be containing some amount of red light,which gets transmitted singlehandedly.I hope this helps!