Proof That a Ray of Light From One Focus of an Ellipse Passes Through the Other Focus
The ellipse above is such thatis a level curve sois a normal to the ellipse at A so
Henceand the law of reflection is satisfied for rays of light betweenand
The ellipse above is such thatis a level curve sois a normal to the ellipse at A so
Henceand the law of reflection is satisfied for rays of light betweenand