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Petroleum-derived pitch is black in colour, hence the adjectival phrase, "pitch-black". [4] The viscoelastic properties of pitch make it well suited for the polishing of high-quality optical lenses and mirrors. In use, the pitch is formed into a lap or polishing surface, which is charged with iron oxide (Jewelers' rouge) or cerium oxide. The ...
Pitch Black Records, a Cyprus-based record label established in 2007 Pitch Black (band) , a New Zealand electronica band Pitch Black (album) , or the title song, by Rifftera, 2015
Riddick made his first appearance outside of the film Pitch Black in the gaming world as a guest character in Fallout Tactics. In this game, he appears in a special encounter titled Pitch Black reflecting his movie origin. Like his cinematic counterpart, Riddick is portrayed as a stealth-focused melee fighter with advanced hand-to-hand combat ...
Since it opened in theaters 10 years ago, on Oct. 5, 2012, pop culture has never been the same: From adding “aca” in front of everything to the blinding popularity of the “Cups” song, the ...
Exercise Pitch Black is a biennial warfare exercise hosted by the Royal Australian Air Force (RAAF). The exercise is normally held in Northern Australia, primarily at RAAF Bases Darwin and Tindal. The aim of the exercise is to practice Offensive Counter Air (OCA) and Defensive Counter Air (DCA) combat, in a simulated war environment. It ...
Its first printed use came as early as 1991 in William G. Hawkeswood's "One of the Children: An Ethnography of Identity and Gay Black Men," wherein one of the subjects used the word "tea" to mean ...
What do the Black History Month colors mean and what are their origins? Design by Yoora Kim. When you see posters and graphics related to Black History Month, chances are you'll see them designed ...
Logarithmic plot of frequency in hertz versus pitch of a chromatic scale starting on middle C. Each subsequent note has a pitch equal to the frequency of the prior note's pitch multiplied by 12 √ 2. The base-2 logarithm of the above frequency–pitch relation conveniently results in a linear relationship with or :