Mindblown: a blog about philosophy.
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Spectrum bias
Variation in the performance of a diagnostic test due to its application to people of differing ages, genders, nationalities, or specific disease manifestations. A test’s sensitivity and specificity may increase or decrease, depending on the population to which it is applied.
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Narrow spectrum
Having a limited span of action against only a few diseases, conditions, or pathogens.
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Invisible spectrum
The portion of the spectrum either below the red (infrared) or above the violet (ultraviolet), which is invisible to the eye, the waves being too long or too short to affect the retina. The invisible spectrum includes rays less than 3900 A in length (ultraviolet, roentgen or x, gamma, and cosmic rays) and those exceeding…
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Chromatic spectrum
The portion of the spectrum that produces visible light. Wavelengths of about 3900 A to 7700 A are visible.
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Absorption spectrum
Spectrum recorded after light rays have passed through a substance capable of absorbing some of the wavelengths passing through. This spectrum is specific for various chemicals.
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Nuclear magnetic resonance spectroscopy
A technique that uses the characteristic absorption of nuclei inside a strong magnetic field to identify and characterize molecules.
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Infrared absorption spectroscopy
A technique that uses the infrared absorbing properties of molecules to determine their presence in tissues or body fluids. A common clinical application is in the design of oximeters.
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Spectroscopy
The branch of physical science that treats the phenomena observed with the spectroscope, or those principles on which the action is based.
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Spectropolarimeter
A device for measuring the rotation of light rays of a specific wavelength by passage through a translucent solid.
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Spectrophotometry
Ail estimation of coloring matter in a solution by use of the spectroscope or spectrophotometer.
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