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colour is defined by the reflection of light off a surface. So glass can be said to have no colour as light does not reflect off of it

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How is glass colour added?

Glass color is added during the manufacturing process by incorporating metal oxides or other colorants into the molten glass mixture. Different metal oxides create different colors in the glass, with cobalt oxide producing blue, chromium oxide creating green, and manganese oxide yielding purple, for example. The amount and type of colorant used will determine the final hue of the glass.


The colour of light which travels through glass with the minimum speed is?

The color of light that travels through glass with the minimum speed is violet. This is because the speed of light in any medium, including glass, is dependent on the medium's refractive index, with shorter wavelengths like violet experiencing a slower speed.


What happens when you make a rainbow with the help of a glass of water and sunlight?

The sunlight hits the glass of water and then the light disperses out as a spectrum of colour (rainbow). This is because sunlight is white light and white light contains the 7 colours of the rainbow. When it hits the glass the colours refract and disperse out as the spectrum of colours, which we see as a rainbow.


Why does light changes its colour after passing through some transparent coloured like a red coloured transparent piece of glass or any such glass or matter?

When light passes through a colored transparent material, certain wavelengths of light are absorbed by the material while others are transmitted. The transmitted light has a different color because it is missing the wavelengths that were absorbed by the material. This causes the light to appear as a different color when it exits the material.


What is the name of the glass that can split white light into different colour's?

The glass is called a prism. When white light enters a prism, it is refracted and separated into its component colors due to the differing wavelengths of each color of light. This effect is known as dispersion.