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Mathematics of the Rainbow.

Peer reviewed

Austin, Joe Dan; Dunning, F. Barry – Mathematics Teacher, 1988

This article presents some of the optics and mathematics related to what causes a rainbow, why it is brighter inside than out, and why more than one rainbow may appear. (PK)

Descriptors: Calculus, Geometry, Light, Mathematical Applications

Reflective Properties of a Parabolic Mirror.

Peer reviewed

Ramsey, Gordon P. – Physics Teacher, 1991

An incident light ray parallel to the optical axis of a parabolic mirror will be reflected at the focal point and vice versa. Presents a mathematical proof that uses calculus, algebra, and geometry to prove this reflective property. (MDH)

Descriptors: Algebra, Calculus, Geometry, High Schools