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An aerotrim (also known as Multi-Axis Trainer or MAT) is a 3-axis gimbal large enough to contain a human being, used for cardiovascular workout and equilibrioception (balance) training in pilots and astronauts. Aerotrims saw use in gyms during the 1980s, but are currently out of production outside of niche professional applications.
Folding chairs also were used as grave goods in the richest graves. A folding chair of ebony and ivory with gold fittings was found in Tutankhamun's tomb in Egypt. Folding chairs were used in Ancient Egypt, Minoan Greece, and Ancient Rome, as well as during the Nordic Bronze Age and the Medieval Period. The frame was mostly made of wood, and ...
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The subject is placed in the swivel chair, blindfolded, then spun about the vertical axis while keeping their head upright or tilted forward or to the side. The subject is then asked to perform tasks such as determine their direction of rotation while blindfolded, or rapidly change the orientation of their head, or attempt to point at a stationary object without blindfold after the chair is ...
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The balance (also balance scale, beam balance and laboratory balance) was the first mass measuring instrument invented. [1] In its traditional form, it consists of a pivoted horizontal lever with arms of equal length – the beam or tron – and a weighing pan [10] suspended from each arm (hence the plural name "scales " for a
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Chair, c. 1772, mahogany, covered in modern red morocco leather, height: 97.2 cm, Metropolitan Museum of Art (New York City) A chair is a type of seat, typically designed for one person and consisting of one or more legs, a flat or slightly angled seat and a back-rest.