Crossword clues for spectrograph
The Collaborative International Dictionary
Spectrograph \Spec"tro*graph\, n. [Spectrum + graph.] (Physics)
An apparatus for photographing or mapping a spectrum.
A photograph or picture of a spectrum. -- Spec`tro*graph"ic, a. -- Spec`tro*graph"ic*al*ly, adv. -- Spec*trog"ra*phy, n.
Douglas Harper's Etymology Dictionary
1876, from spectro- + -graph "instrument for recording; something written." Related: Spectrographic; spectrography.
Wiktionary
n. A machine for recording spectrum, producing spectrograms.
WordNet
n. a spectroscope by which spectra can be photographed
a photographic record of a spectrum [syn: spectrogram]
Wikipedia
A spectrograph is an instrument that separates light into a frequency spectrum and records the signal using a camera. There are several kinds of machines referred to as spectrographs, depending on the precise nature of the waves. The term was first used in July, 1876 by Dr. Henry Draper when he invented the earliest version of this device, and which he used to take several photographs of the spectrum of Vega. This earliest version of the spectrograph was cumbersome to use and difficult to manage.
One way to define a spectrograph is as a device that separates light by its wavelength and records this data. A spectrograph typically has a multi-channel detector system or imaging system that detects the spectrum of light.
Usage examples of "spectrograph".
The new-model Metallurgists I got differed from the previous model only in knowing the use of Beeman Spectrographs.
It carried two spectrographs, a high-speed photometer, a wide-field Advanced Charge-Coupled Device, and a fine guidance sensor.
After twelve minutes, the cesium clocks of projected time and real time dropped to the single digits, whereupon the spectrograph, tracking the exhaust flame of the lander, went blank and after a row of zeros displayed the last, classic word: Brennschluss.