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Goniometer made by Develey le Jeune in Lausanne, late 18th–early 19th century. A goniometer is an instrument that either measures an angle or allows an object to be rotated to a precise angular position. The term goniometry derives from two Greek words, γωνία 'angle' and μέτρον 'measure'. [1]
Manual (1), and Mitscherlich's optical (2) goniometers for use in crystallography, c. 1900. A Goniophotometer is a device used for measurement of the light emitted from an object at different angles. [1]
Goniophotometry or goniometric optical scatter measurement is the technique of measuring the angular distribution of light, possibly wavelength-dependent, scattered from a surface. Goniophotometry is used to measure intensity distributions from lamps and luminaries and to evaluate the gloss of paints and other surface finishes.
The reference values for the normal ROM in individuals differ slightly depending on age and sex. [2] For example, as an individual ages, they typically lose a small amount of ROM. Analog and traditional devices to measure range of motion in the joints of the body include the goniometer and inclinometer which use a stationary arm, protractor ...
In ophthalmology, gonioscopy is a routine procedure that measures the angle between the iris and the cornea (the iridocorneal angle), using a goniolens (also known as a gonioscope) together with a slit lamp or operating microscope.
A positioning goniometer or goniometric stage is a device used to rotate an object precisely (within a small angular range) about a fixed axis in space. Its appearance is similar to that of a linear stage .
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