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"...as the arrow is moved backwards, the angle at c, must be diminished, because the rays flowing from the extremities of the object fall a greater distance before the reach the surface of the mirror; and as the angles of the reflected rays bear a proportion to those of the incident ones, so the angle of vision will become less in proportion, as the object is withdrawn." -Comstock 1850

Convex Mirror

"...as the arrow is moved backwards, the angle at c, must be diminished, because the rays flowing from…

An illustration of a backwards United States flag.

Backwards United States Flag

An illustration of a backwards United States flag.