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Snell's law (also known as Snell–Descartes law and ibn-Sahl law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

The cube of a number or any other mathematical expression is denoted by a superscript 3, for example 2 3 = 8 or (x + 1) 3. The cube is also the number multiplied by its square: n 3 = n × n 2 = n × n × n. The cube function is the function x ↦ x 3 (often denoted y = x 3) that maps a number to its cube. It is an odd function, as

This is a documentation subpage for Template:Cite KYTC route log. It contains usage information, categories and other content that is not part of the original ...

Helle Crafts (English: / ˈ h ɛ l ə ˈ k r æ f t s / (); born Helle Lorck Nielsen; July 7, 1947 – November 19, 1986) was a Danish flight attendant who was murdered by her husband, Eastern Air Lines pilot Richard Crafts.

In algebra, the rational root theorem (or rational root test, rational zero theorem, rational zero test or p/q theorem) states a constraint on rational solutions of a polynomial equation. . Solutions of the equation are also called roots or zeroes of the polynomial on the left side. The theorem states that each rational solution x = p⁄q ...

Exponentiation is a mathematical operation, written as b n, involving two numbers, the base b and the exponent or power n, and pronounced as "b raised to the power of n ". When n is a positive integer, exponentiation corresponds to repeated multiplication of the base: that is, b n is the product of multiplying n bases: