| spectrometry, mass, secondary ion | A mass-spectrometric technique that is used for microscopic chemical analysis. A beam of primary ions with an energy of 5-20 kiloelectronvolts (kev) bombards a small spot on the surface of the sample under ultra-high vacuum conditions. Positive and negative secondary ions sputtered from the surface are analyzed in a mass spectrometer in regards to their mass-to-charge ratio. (12 Dec 1998) |
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| spectrometry, X-ray emission | Identification and measurement of concentration of elements based on the fact that X-rays emitted by an excited element have a wavelength characteristic of that element and an intensity related to its concentration. It includes fluorescence, or secondary-emission, X-ray spectrometry, in which the specimen is irradiated by X-rays. Primary-emission x-ray spectrometry, in which the specimen is bombarded by electrons, is a specific type of X-ray emission spectrometry known as electron probe microanalysis. (12 Dec 1998) |
| spectrophobia | <psychology> Morbid fear of mirrors or of one's mirrored image. Origin: spectro-+ G. Phobos, fear (05 Mar 2000) |
| spectrophotofluorimetry | Measurement of the intensity and quality of fluorescence by means of a spectrophotometer. (05 Mar 2000) |
| spectrophotometer | A machine used to measure how much light of a given wavelength is absorbed by a liquid sample, or to measure how intense (bright) the spectral lines and bands produced by the sample are, relative to each other. (09 Oct 1997) |
| spectrophotometry | Quantitative measurements of concentrations of reagents made by measuring the absorption of visible, ultraviolet or infrared light. (18 Nov 1997) |
| spectrophotometry, atomic absorption | A highly sensitive technique used to analyze various elements, especially metals, including aluminum, arsenic, beryllium, calcium, copper, iron, lead, and lithium, which are present in trace amounts. The atoms are excited above a ground state by flame vaporization, and the radiation emitted as the molecules return to a ground state is measured in unexcited non-ionised molecules. (12 Dec 1998) |
| spectrophotometry, infrared | Spectrophotometry in the infrared region, usually for the purpose of chemical analysis through measurement of absorption spectra associated with rotational and vibrational energy levels of molecules. (12 Dec 1998) |
| spectrophotometry, ultraviolet | Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example cl2, so2, no2, cs2, ozone, mercury vapor, and various unsaturated compounds. (12 Dec 1998) |
| spectropolarimeter | An instrument for measuring the rotation of the plane of polarised light of specific wavelength upon passage through a solution or translucent solid. Origin: spectro-+ polarimeter (05 Mar 2000) |
| spectroscope | <instrument, physics> An optical instrument for forming and examining spectra (as that of solar light, or those produced by flames in which different substances are volatilized), so as to determine, from the position of the spectral lines, the composition of the substance. Origin: Spectrum + -scope. Source: Websters Dictionary (01 Mar 1998) |
| spectroscopic | Relating to or performed by means of a spectroscope. (05 Mar 2000) |
| spectroscopical | Of or pertaining to a spectroscope, or spectroscopy. Spectroscop"ically. Source: Websters Dictionary (01 Mar 1998) |
| spectroscopist | One who investigates by means of a spectroscope; one skilled in the use of the spectroscope. Source: Websters Dictionary (01 Mar 1998) |
| spectroscopy | <procedure> Spectroscopy is the science of measuring the emission and absorption of different wavelengths (spectra) of visible and non-visible light, this can be done via a spectroscope, which consists of a slit, prism, collimator lens, object lens, and a grating. (09 Oct 1997) |
Synonyms :
Synonyms : AA Spectrophotometry, AE Spectrophotometry, Atomic Absorption Spectrophotometry, Atomic Emission Spectrophotometry, Atomic Spectrophotometry, ICP-AES, Inductively Coupled Plasma Atomic Emission Spectrophotomety, Spectrophotometry, Atomic Emission
Synonyms :
Synonyms :
Synonyms : Electron Energy Loss Spectroscopy, Energy-Loss Spectroscopy, Electron, Spectroscopy, Electron Energy Loss
| spectinomycin |
an antibiotic used to treat gonorrhea
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| spectroscopic analysis |
spectroscopy: the use of spectroscopes to analyze spectra
출처: wordnet.princeton.edu/perl/webwn
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| spectrometer |
mass spectrometer: spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer
출처: wordnet.princeton.edu/perl/webwn
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| spectrometry |
spectroscopy: the use of spectroscopes to analyze spectra
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| spectacle blur |
the indistinct vision with spectacles occurring after removal of hard contact lenses, particularly non
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| SPECT | a photographic record of a spectrum |
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| SPECT | a photographic record of a spectrum |
| SPECT | a spectroscope by which spectra can be photographed |
| SPECT | relating to or employing a spectrograph |
| SPECT | the use of spectroscopes to analyze spectra |
| SPECT | by spectrographic means |
| SPECT | spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer |
| SPECT | of or relating to or involving spectrometry |
| SPECT | the use of spectroscopes to analyze spectra |
| SPECT | a photometer for comparing two light radiations wavelength by wavelength |
| SPECT | an optical instrument for spectrographic analysis |
| SPECT | of or relating to or involving spectroscopy |