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The Downward Spiral is the second studio album by the American industrial rock band Nine Inch Nails, released on March 8, 1994, by Nothing Records in the United States and Island Records in Europe. It is a concept album detailing the self-destruction of a man from the beginning of his misanthropic "downward spiral" to his suicidal breaking point.
Parkour. Parkour ( French: [paʁkuʁ]) is an athletic training discipline or sport in which practitioners (called traceurs) attempt to get from one point to another in the fastest and most efficient way possible, without assisting equipment and often while performing feats of acrobatics. [ 5]
The Bethungra Spiral is a heritage-listed rail spiral on the Main Southern line near Bethungra, between Junee and Cootamundra. The spiral carries the northbound track, forming a part of the Sydney–Melbourne rail corridor. [1] [2] It is a listed heritage item, having been added to the New South Wales State Heritage Register on 2 April 1999. [3]
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The World Freerunning Parkour Federation (WFPF) was founded in January 2007 as a partnership between Ruff Magic Entertainment, a New Jersey limited liability company, and eight Parkour and Freerunning athletes. The athletes, Daniel Ilabaca, Ryan Doyle, Tim Shieff, Oleg Vorslav, Victor Lopez, Gabriel Nunez, Paul Darnell and Richard King, and the ...
For <, spiral-ring pattern; =, regular spiral; >, loose spiral. R is the distance of spiral starting point (0, R) to the center. R is the distance of spiral starting point (0, R) to the center. The calculated x and y have to be rotated backward by ( − θ {\displaystyle -\theta } ) for plotting.
Poincaré map. In mathematics, particularly in dynamical systems, a first recurrence map or Poincaré map, named after Henri Poincaré, is the intersection of a periodic orbit in the state space of a continuous dynamical system with a certain lower-dimensional subspace, called the Poincaré section, transversal to the flow of the system.
Jinjiazhuang Tunnel (Chinese: 金家庄隧道) or Jinjiazhuang Spiral Tunnel (Chinese: 金家庄螺旋隧道), is the world's longest highway spiral tunnel. [1] [2] The spiral has a curve radius of 860 metres (2,820 ft) and the elevation difference between the tunnel entrance and exit is 112 metres (367 ft).