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Adjustable beds or electric adjustable bed sizes differ from the standard bed size. The length of these beds differ from a standard size due to the nature of the bed needing to bend. So they are 200 cm in length rather than 191 cm. King size and super king size are normally two 75 cm or two 90 cm adjacent beds. [25]
An adjustable bed is a bed which has a multi-hinged lying surface which can be profiled to a number of different positions. [1] Common adjustments include inclining the upper body and raising the lower body independently of each other.
Anglepoise model 1227 from 1935. A balanced-arm lamp, sometimes called a floating arm lamp, is a lamp with an adjustable folding arm which is constructed such that the force due to gravity is always counteracted by springs, regardless of the position of the arms of the lamp.
The choice of an origin and an orthonormal basis forms a coordinate frame known as an orthonormal frame. For a general inner product space V , {\displaystyle V,} an orthonormal basis can be used to define normalized orthogonal coordinates on V . {\displaystyle V.}