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of Light

Refraction. Reflection. of Light. Light bends only at the boundary of two mediums. It continues to travel in a straight line when there is no change in medium. What is Refraction?. Refraction is the change in direction , or bending , of light when it passes from one medium to another.

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of Light

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  1. Refraction Reflection of Light

  2. Light bends only at the boundary of two mediums. It continues to travel in a straight line when there is no change in medium.

  3. What is Refraction? Refraction is the change in direction, or bending, of light when it passes from one medium to another.

  4. Stage 1 towel floor Direction of motion Stage 2 Direction of motion carpet floor The car travels in a straight line when it is on the floor. When the first wheel comes into contact with the carpet, it encounters a loss of speed due to the increase of frictional force acting on it. Knowing speed = distance/time, therefore the speed of the wheel has decreased, as it traveled less distance. However, the remaining three wheels are still spinning at the original frequency, and a resultant torque was produced. This torque caused the car to change its direction of motion.

  5. Stage 2 Direction of motion carpet floor Stage 4 Direction of motion towel Stage 1 floor towel floor Direction of motion Stage 3 Direction of motion towel floor The direction of motion has changed from its original direction. The car continues to travel in a straight line after changing its direction on the towel.

  6. air glass Light travels at a slower speed in glass than in air.

  7. Why does Refraction take place? • Refraction takes place due to the change in the speed of light as it enters another medium of different optical density. • Optical density is also known as the refractive index, n.

  8. Refraction is the _______ of light when it passes from one medium to another. Light still travels in a _______ line but its _______ changes as it enters into another medium of different optical _______. The optical density of the medium is also known as its _______ _____. This phenomenon comes about because of the change in the _____ of light as it enters another medium.

  9. Refraction is the bending of light when it passes from one medium to another. Light still travels in a straight line but its direction changes as it enters into another medium of different optical density. The optical density of the medium is also known as its refractiveindex. This phenomenon comes about because of the change in the speed of light as it enters another medium.

  10. Refractive index =

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