spectrometer

8 ENTRIES FOUND:

spec·trom·e·ter

noun \spek-ˈträ-mə-tər\

Definition of SPECTROMETER

1
:  an instrument used for measuring wavelengths of light spectra
2
:  any of various analytical instruments in which an emission (as of particles or radiation) is dispersed according to some property (as mass or energy) of the emission and the amount of dispersion is measured <nuclear magnetic resonance spectrometer>
spec·tro·met·ric \ˌspek-trə-ˈme-trik\ adjective
spec·trom·e·try \spek-ˈträ-mə-trē\ noun

Origin of SPECTROMETER

International Scientific Vocabulary
First Known Use: 1874

spec·trom·e·ter

noun \spek-ˈträm-ət-ər\   (Medical Dictionary)

Medical Definition of SPECTROMETER

1
: an instrument used for measuring wavelengths of light spectra
2
: any of various analytical instruments in which an emission (as of particles or radiation) is dispersed according to some property (as mass or energy) of the emission and the amount of dispersion is measured <nuclear magnetic resonance spectrometer>
spec·tro·met·ric \ˌspek-trə-ˈme-trik\ adjective
spec·trom·e·try \spek-ˈträm-ə-trē\ noun, plural spec·trom·e·tries

spectrometer

noun    (Concise Encyclopedia)

Device for detecting and analyzing wavelengths of electromagnetic radiation, commonly used for molecular spectroscopy; more broadly, any of various instruments in which an emission (as of electromagnetic radiation or particles) is spread out according to some property (as energy or mass) into a spectrum and measurements are made at points or regions along the spectrum. As used in traditional laboratory analysis, a spectrometer includes a radiation source and detection and analysis equipment. Emission spectrometers excite molecules of a sample to higher energy states and analyze the radiation emitted when they decay to the original energy state. Absorption spectrometers pass radiation of known wavelength through a sample, varying the wavelengths to produce a spectrum of results; the detector system reveals to what extent each wavelength is absorbed. Fourier-transform spectrometers resemble absorption spectrometers but use a broad band of radiation; a computer analyzes the output to find the absorption spectrum. Different designs allow study of various kinds of samples over many frequencies, at different temperatures or pressures, or in an electric or magnetic field. Mass spectrometers (see mass spectrometry) spread out the atomic or molecular components in a sample according to their masses and then detect the sorted components.

Browse

Next Word in the Dictionary: spectromicroscope
Previous Word in the Dictionary: spectrology
All Words Near: spectrometer

Seen & Heard

What made you want to look up spectrometer? Please tell us where you read or heard it (including the quote, if possible).