Light could bend when it enters a prism. A prism is a transparent object such as glass.
Refraction
All the colors of the visible light spectrum are made visible.
Two times. One when the light beam crosses the air-prism interface and enters the prism and a second time when the beam crosses the prism-air interface on its way out of the prism.
When the light ray strikes the surface of the prism, both when it enters and when it leaves, it bends owing to the different in the speeds of light in air and the material of which the prism is made. The amount of bending depends in part on the frequency of the light which is related to the colour of the light, hence the appearance of a colour spectrum which can be seen from a triangular prism.
Light could bend when it enters a prism. A prism is a transparent object such as glass.
As the light passes through the prism, the resulting effect is called a 'refraction'. In other words, the light enters from one side of the prism and is then 'redirected' at a right angle as it exits the prism.
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Refraction
All the colors of the visible light spectrum are made visible.
What happens when light enters a prism is the light is broken up into all its natural colors. Hence what happens when you see a rainbow, all the little rain drops act as a prism.
Two times. One when the light beam crosses the air-prism interface and enters the prism and a second time when the beam crosses the prism-air interface on its way out of the prism.
The light sctters into a spectrum.
ROYGBIVRedOrangeYellowGreenBlueIndigoViolet
They refract light as the light enters through one side of the prism, at a certain angle, the glass that the prism is made of, decreases the speed of light. And so it bends. Then it hits the other face and emerges out, and that is when the dispersion happens and the white light splits into the spectrum of seven colours
it will make a rainbow on the wall
When the light ray strikes the surface of the prism, both when it enters and when it leaves, it bends owing to the different in the speeds of light in air and the material of which the prism is made. The amount of bending depends in part on the frequency of the light which is related to the colour of the light, hence the appearance of a colour spectrum which can be seen from a triangular prism.