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This page was last edited on 15 June 2004, at 04:40 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Black hole greybody factors are functions of frequency and angular momentum that characterizes the deviation of the emission-spectrum of a black hole from a pure black-body spectrum. As a result of quantum effects, an isolated black hole emits radiation that, at the black-hole horizon, matches the radiation from a perfect black body. [ 1 ]
The complete 21st U.S. edition of Gray's Anatomy of the Human Body, published in 1924. at the Internet Archive N.B.: This is the most recent American version that is in the public domain. Online version of Gray's Anatomy – The complete 20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918.
Dr. Erica Hahn (Brooke Smith), who first appeared on Grey's Anatomy in Season 2, returned as a series regular in Season 4. [152] Shortly after the announcement that Smith would be a regular member of the cast, Entertainment Weekly 's Michael Ausiello, reported that her character, Hahn, would depart from Grey's Anatomy on November 6, 2008. [153] E!
Wikipedia was launched on January 15, 2001 [20] (referred to as Wikipedia Day) as a single English-language edition with the domain name www.wikipedia.com, [W 6] and was announced by Sanger on the Nupedia mailing list. [22] The name originated from a blend of the words wiki and encyclopedia.
The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems. The external human body consists of a head, hair, neck, torso (which includes the thorax and abdomen), genitals, arms, hands, legs, and feet.
The human body consists of biological systems, that consist of organs, that consist of tissues, that consist of cells and connective tissue. The history of anatomy has been characterized, over a long period of time, by a continually developing understanding of the functions of organs and structures in the body.
A grey body is one where α, ρ and τ are constant for all wavelengths; this term also is used to mean a body for which α is temperature- and wavelength-independent. A white body is one for which all incident radiation is reflected uniformly in all directions: τ = 0, α = 0, and ρ = 1. For a black body, τ = 0, α = 1, and ρ = 0. Planck ...