Nota Terkini

Thursday, October 15, 2009

[Physics Form 4] Refraction

  • Refraction is the phenomenon exhibited by light when it undergoes a change in speed.

  • Normally, when light travels through two different media of different optical density, it undergoes a change in speed and exhibits refraction.

  • In most cases, refraction is seen as the bending of light or deflection of light from its original direction of propagation.

  • There are two types of refraction:
    1. Bending of light towards the normal, which occurs when light moves from a medium of lower optical density to higher optical density.
    2. Bending of light away from the normal, which occurs when light moves from a medium of higher optical density to lower optical density.

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