refraction of light

refraction of light

1. wave theory of light

   • explain refraction and reflection

2. light rays

   • represent the direction of travel of wavefronts

3. refraction

   • change of direction that occurs when light passes non-normally across a boundary btwn two transparent substances
     • light ray bends
       • towards the normal when passing frm air to glass
       • away from the normal when it passes from glass to air
     • light ray bends
       • towards the normal - passes into a more refractive substance
       • away from normal - passes into a less refractive substance

4. equation for light ray travelling from air into a transparent substance

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