An instrument for measuring the energies of a beam of particles with a continuous distribution.

the instrument connected to a telescope that seperates the light signals into different frequecies, producing a spectrum. (See also text in HighSpec, FreqRes, ExtraGal, astrochem, and StarDeath.)

A spectroscope which includes an angular scale for measurement of the angular deviation and wavelengths of the components of the spectrum.

An instrument that measures spectra.

An instrument that separates measurements into different energies or frequencies, producing a spectrum.

An instrument which separates radiation into energy bands (or, in a mass spectrometer, particles into mass groups) and indicates the relative intensities in each band or group.

A device used to count an emission of radiation of a specific energy or range of energies to the exclusion of all other energies. See also multichannel analyzer.

Instrument used to determine the distribution of energy within a spectrum of wavelengths.

A spectroscope equipped with the ability to measure wavelengths.

spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer

a backend instrument used to process (separate) all wavelengths of electromagnetic radiation signals into different frequencies and bandwidths

a device that disperses the path of impinging photons through an angle that is dependent on their wavelength

a device that measures only one selectable color, and a monochromator is a device that transmits only one color

a device that splits electromagnetic radiation, in this case infrared light, into a spectrum of frequencies, or colors

a known instrument for examining the spectral characteristics of light

a more accurate measuring device than a densitometer

an apparatus designed to measure the distribution of radiation of a source in a particular wavelength region

an instrument designed to detect specific energies of light

an instrument for measuring some property of light as a function of some portion of the electromagnetic spectrum

an instrument that determines the frequency distribution of the energy generated by a source and displays all components simultaneously

an instrument that is able to separates a things according to a set of criteria

an instrument that separates light at different wavelengths into distinct signals, producing a spectrum

an instrument that splits light into the light spectrum, its individual components

an instrument that takes light from Jupiter and breaks it up into its constituent wave lengths

an instrument used for measuring what wavelengths of the spectrum are absorbed or emitted by an object

an instrument with which one can measure the quantities and types of metallic elements in a sample of oil

an optical instrument for measuring properties of light over some portion of the electromagnetic

an optical instrument for measuring properties of lightover some portion of the electromagnetic spectrum

a scientific instrument that disperses the light emitted or reflected by a substance into a spectrum (individual colors)

a spectrograph with measurement capabilities

an instrument used to measure wavelengths or indexes of refraction.

A spectrometer is any instrument used for measuring the intensity and wavelengths of visible or invisible electromagnetic radiation.

a device for measuring the intensity of radiation absorbed, reflected, or emitted by a material as a function of wavelength

An instrument for obtaining a spectrum; in astronomy, usually attached to a telescope to record the spectrum of a star, galaxy, or other astronomical object.

A device to measure the spectral distribution of electromagnetic radiation. This may be achieved by a dispersive prism, grating, or circular interference filter with a detector placed behind a slit. If one detector is used, the dispersive element is moved so as to sequentially pass all dispersed wavelengths across the slit. In an interferometer-spectrometer, on the other hand, all wavelengths are examined all the time, the scanning effect being achieved rapidly by oscillating two, partly reflective (usually parallel) plates so that interference fringes are produced. A Fourier transform is required to reconstruct the spectrum.

An instrument which measure the position of spectral lines.

An instrument that provides information on the bonding of an atom in a mineral by bombarding it with gamma rays and measuring small shifts in the velocity or energy of the gamma rays emitted. It is most commonly used to identify the nature of iron in a mineral.

An instrument for producing ions in a gas and determining their mass and hence composition.

An instrument for measuring the emission or absorption of light of a particular wavelength.

Instrument used to produce detailed spectra of cosmic objects. Usually, a spectrometer records a spectrum in electronic form on a computer.

An optical instrument that splits the light received from an object into its component wavelengths by means of a diffraction grating; then measuring the amplitudes of the individual wavelengths.

A kind of spectrograph in which some form of detector, other than a photographic film, is used to measure the distribution of radiation in a particular wavelength region.

any device that produces a spectrum by dispersion and is calibrated to measure transmitted energy with respect to wavelengths of radiation, refractive indices of prism materials, or radiant intensities at various wavelengths.

The instrument connected to a telescope that separates the light signals into different frequencies, producing a spectrum.

An instrument with an entrance slit and one or more exit slits, with which measurements are made eigther by scanning the spectral range point by point or by simultaneous measuements at several spectral positions.

Instrument for obtaining a spectrum of light or X-rays.

Instrument that measures wavelengths of radiant energy, or the spectrum (singular of spectra).

A instrument that measures absorption and attenuation as a function of different wavelengths of light.

an instrument that measures the spectrum of a sample. [For example a mass spectrometer

An instrument for measuring the intensity of radiation as a function of wavelength. See Spectrograph.

An instrument used to study the electromagnetic spectrum.

instrument that allows to resolve the spectrum of a source, and to measure the intensity of the light, at different wavelengths.

An instrument that spreads light or other electromagnetic radiation into its component wavelengths spectrum), recording the results photographically or electronically. From that it is possible to measure the intensity of radiation as a function of wavelength.

An instrument that measures the wavelength of electromagnetic radiation.

A chemical analytical instrument used in spectroscopy.

An instrument that measures the intensity of radiation, including light, as a function of its wavelength. Because different substances, including elements and compounds, both absorb and emit specific wavelengths of radiation, spectrometers can be used to measure the composition of distant stars and planets, as well as the composition of various samples on earth including soil, water, minerals and gases.

An optical instrument that allows a user to view, record, and analyze a spectrum by rendering its component waves distinct and visible.

A device consisting of a slit through which a telescope views and examines light. It is most commonly used to measure wavelengths of light.

A generic term for a device that measures the intensity of radiation as a function of frequency (or wavelength) of the radiation or that breaks down any signal into its frequency components.

A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum. The variable measured is most often the light's intensity but could also, for instance, be the polarization state. The independent variable is usually the wavelength of the light, normally expressed as some fraction of a meter, but sometimes expressed as some unit directly proportional to the photon energy, such as wavenumber or electron volts, which has a reciprocal relationship to wavelength.