entropy wave
81Hash tree — A binary hash tree In cryptography and computer science Hash trees or Merkle trees are a type of data structure[citation needed] which contains a tree of summary information about a larger piece of da …
82Colin Greenland — at P Con III in Dublin in 2006 Born 17 May 1954 (1954 05 17) (age 57) Dover, Kent, England, U.K. Occ …
83Colin Greenland — Colin Greenland, 2006 Colin Greenland (* 17. Mai 1954 in Dover, Kent) ist ein britischer Science Fiction Schriftsteller. Bereits mit seiner ersten Erzählung gewann er den zweiten Preis des Faber Faber Wettbewerbs. Sein Roman Take back Plenty… …
84quasicrystal — /kway zuy kris tl, kway suy , kwah see , zee /, n. a form of solid matter whose atoms are arranged like those of a crystal but assume patterns that do not exactly repeat themselves. [1985 90] * * * Introduction also called quasi periodic crystal …
85Metamaterial — Negative index metamaterial array configuration, which was constructed of copper split ring resonators and wires mounted on interlocking sheets of fiberglass circuit board. The total array consists of 3 by 20×20 unit cells with overall dimensions …
86X-ray crystallography — can locate every atom in a zeolite, an aluminosilicate with many important applications, such as water purification. X ray crystallography is a method of determining the arrangement of atoms within a crystal, in which a beam of X rays strikes a… …
87Contributors to general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts …
88spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …
89Dirac delta function — Schematic representation of the Dirac delta function by a line surmounted by an arrow. The height of the arrow is usually used to specify the value of any multiplicative constant, which will give the area under the function. The other convention… …
90Normal mode — For other types of mode, see Mode (disambiguation). Vibration of a single normal mode of a circular disc with a pinned boundary condition along the entire outer edge. See other modes. A normal mode of an oscillating system is a pattern of motio …
