le and the angle foundby reading the position of the pointer gives the angle ofincidence. Move the screen about until the reflected beamfalls on it and adjust it, keeping the foot of the pencil markon the circle until the bright patch is again bisected by thepencil line; the position of the line… … 32 LIGHT. [CH. Ill angle between the pointer and the incident ray. Thus if thereading of the incident ray be 0° and that of the pointer 30°,the reading for the reflected ray will be 60°. With this apparatus a series of observations may bemade, varying the angle of incidence and observing…
Heat · Light
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