Mindblown: a blog about philosophy.
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Actinic radiation
Ionizing, electromagnetic radiation that can produce chemical changes, such as the damage done to skin by ultraviolet sunlight. The component of electromagnetic radiation capable of influencing the emulsion of photographic film, extending far beyond the wavelength spectrum of ultraviolet and visible light.
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Radian
A unit of angular measurement equivalent to 57.295 degrees. It is subtended at the center of a circle by an arc the length of the radius of the circle.
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Radiability
The capability of being penetrated readily by ionizing radiation,
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Rachitomy
Surgical cutting of the vertebral column.
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Rachitome
An instrument used to open the spinal canal.
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Rachiotome
An instrument for dividing the vertebrae. A surgical tool designed for the purpose of severing the vertebrae.
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Rachiopagus
A conjoined twin deformity in which the two are joined at the vertebral column.
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Rachiometer
An instrument for measuring a spinal curvature
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Rachicele
Protrusion of the contents of the spinal canal in spina bifida cystica.
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Racemization
The production of a racemic form of an optically inactive compound.
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