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The Freedom chair has patented synchronous arms, which adjust simultaneously. [12] [13] The headrest tilts forward as the sitter reclines, keeping the head in an upright position. [14] Liberty Chair, 2004: Humanscale’s other notable task chair is its Liberty chair, also designed by Niels Diffrient, which was introduced in 2004.
The Lowndean chair of Astronomy and Geometry is one of the two major Professorships in Astronomy (alongside the Plumian Professorship) and a major Professorship in Mathematics at Cambridge University. It was founded in 1749 by Thomas Lowndes, an astronomer from Overton in Cheshire.
The following astronomers have been elected to the office of Lowndean Professor of Astronomy and Geometry at the University of Cambridge in England The main article for this category is Lowndean Professor of Astronomy and Geometry .
The chair is currently held at the Institute of Astronomy in the University. The Plumian chair was founded in 1704 by Thomas Plume , a member of Christ's and Archdeacon of Rochester , to "erect an Observatory and to maintain a studious and learned Professor of Astronomy and Experimental Philosophy, and to buy him and his successors utensils and ...
In 1991 he was elected a Fellow of the Royal Society. [5]In 2003 he was awarded an Honorary Degree (Doctor of Science) from the University of Bath.. Hitchin was elected as an Honorary Fellow of Jesus College in 1998, [2] and the Senior Berwick Prize (1990), the Sylvester Medal (2000) and the Pólya Prize (2002) have been awarded to him in honour of his far-reaching work.
Kneeling chair with a rocker base. A kneeling chair is a type of chair for sitting in a position with the thighs dropped to an angle of about 60° to 70° from vertical (as opposed to 90° when sitting in a normal chair), with some of the body's weight supported by the shins.
In mathematics, non-Euclidean geometry consists of two geometries based on axioms closely related to those that specify Euclidean geometry.As Euclidean geometry lies at the intersection of metric geometry and affine geometry, non-Euclidean geometry arises by either replacing the parallel postulate with an alternative, or relaxing the metric requirement.
In astronomy, it is typically difficult to directly measure the distance to an object, yet the object may have a known physical size (perhaps it is similar to a closer object with known distance) and a measurable angular diameter. In that case, the angular diameter formula can be inverted to yield the angular diameter distance to distant objects as
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