Transmission Media -Cont

Example of Refraction o    A pencil sticking out of a glass of water appears bent because the light by which we see it changes direction as it moves from air to water ƒ     Direction of Refraction Direction in which a light is refracted depends upon the density of a medium o    A  beam  of  light  moves  from  a  less  dense  into  a  more  dense  medium bend towards vertical axis o    Incident angle is 'I' and Refracted angle is 'R'