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A barn (symbol: b) is a metric unit of area equal to 10 −28 m 2 (100 fm 2). This is equivalent to a square that is 10 −14 m (10 fm ) each side, or a circle of diameter approximately 1.128 × 10 −14 m (11.28 fm).
A barn is a serious metric unit of area used by nuclear physicists to quantify the scattering or absorption cross-section of very small particles, such as atomic nuclei. [24] One barn is equal to 1.0 × 10 −28 m 2.
The cross section obtained in this way is called the total cross section and is usually denoted by a σ or σ T. Typical nuclear radii are of the order 10 −15 m. Assuming spherical shape, we therefore expect the cross sections for nuclear reactions to be of the order of π r 2 {\displaystyle \pi r^{2}} or 10 −28 m 2 (i.e., 1 barn).
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Half-hipped (clipped gable, jerkinhead [7]): A combination of a gable and a hip roof (pitched roof without changes to the walls) with the hipped part at the top and the gable section lower down. Dutch gable, gablet : A hybrid of hipped and gable with the gable (wall) at the top and hipped lower down; i.e. the opposite arrangement to the half ...
Barn church, specific type of clandestine church; Barn, a 2021 album by Neil Young and Crazy Horse; Barn (Welsh magazine), a current affairs magazine from Wales; Barn (unit), a unit of cross section area used in nuclear and particle physics
The New York Times has used video games as part of its journalistic efforts, among the first publications to do so, [13] contributing to an increase in Internet traffic; [14] In the late 1990s and early 2000s, The New York Times began offering its newspaper online, and along with it the crossword puzzles, allowing readers to solve puzzles on their computers.
Williams Arena is an indoor arena located in Minneapolis, Minnesota.It is the home arena for the University of Minnesota's men's and women's basketball teams. It also housed the men's hockey team until 1993, when it moved into its own building, 3M Arena at Mariucci.