**Planck units** — are units of measurement named after the German physicist Max Planck, who first proposed them in 1899. They are an example of natural units, i.e. units of measurement designed so that certain fundamental physical constants are normalized to 1. In … Wikipedia

**Hartley transform** — In mathematics, the Hartley transform is an integral transform closely related to the Fourier transform, but which transforms real valued functions to real valued functions. It was proposed as an alternative to the Fourier transform by R. V. L.… … Wikipedia

**Normalization (statistics)** — For other uses, see Standard score and Normalizing constant. In one usage in statistics, normalization is the process of isolating statistical error in repeated measured data. A normalization is sometimes based on a property. Quantile… … Wikipedia

**Runic transliteration and transcription** — are part of analysing a runic inscription. Usually scholars both transliterate the runes into Latin letters, transcribe into a normalized spelling in the language of the inscription and translate the inscription into the language they write… … Wikipedia

**Normalized frequency (digital signal processing)** — In digital signal processing, the normalized frequency of a periodic signal is its frequency expressed in units of cycles (or radians) per sample, rather than in the usual SI units of hertz (cycles per second). The cycles per sample frequency is… … Wikipedia

**Grand unification theory** — articleissues article=y refimprove=June 2006 expert=Physics tone=August 2008 update=March 2008Grand Unification, grand unified theory, or GUT refers to any of several very similar unified field theories or models in physics that predicts that at… … Wikipedia

**Atomic units** — (au) form a system of units convenient for atomic physics, electromagnetism, and quantum electrodynamics, especially when the focus is on the properties of electrons. There are two different kinds of atomic units, which one might name Hartree… … Wikipedia

**Spherical harmonics** — In mathematics, the spherical harmonics are the angular portion of an orthogonal set of solutions to Laplace s equation represented in a system of spherical coordinates. Spherical harmonics are important in many theoretical and practical… … Wikipedia

**Modified discrete cosine transform** — The modified discrete cosine transform (MDCT) is a Fourier related transform based on the type IV discrete cosine transform (DCT IV), with the additional property of being lapped: it is designed to be performed on consecutive blocks of a larger… … Wikipedia

**Bieberbach conjecture** — In complex analysis, the Bieberbach conjecture or de Branges s theorem, asked by harvs|txt|first=Ludwig |last=Bieberbach|authorlink=Ludwig Bieberbach|year=1916 and proved by harvs|txt|authorlink=Louis de Branges de Bourcia|first=Louis |last=de… … Wikipedia