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  1. In spectrum …or maps spectra is a spectrograph. Spectra may be classified according to the nature of their origin—i.e., emission or absorption. An emission spectrum consists of all the radiations emitted by atoms or molecules, whereas in an absorption spectrum portions of a continuous spectrum (light containing all wavelengths) are missing because…

  2. The Space Telescope Imaging Spectrograph (STIS) is a versatile "combi-instrument" taking advantage of modern technologies. It combines a camera with a spectrograph, and covers a wide range of wavelengths from the near-infrared region into the ultraviolet. A spectrograph spreads out the light gathered by a telescope so that it can be analysed to ...

  3. Spectrographs and Detectors. Spectrographs with planar holographic transmission gratings have become the norm in ROA spectroscopy. The high-speed entrance optics of commercial spectrographs is ill-suited for coupling with the fiber optics of the dual-arm SCP backscattering arrangement of Figure 1. The 2×31 fibers with a 215 μm core and a 245 ...

  4. Two-dimensional spectrographs used for Raman spectroscopy. (A) combination of a filter spectrograph and a diffraction spectrograph. F1, F2, and F3 are dichroic beam splitters; G1 is a diffraction grating; L1 is a camera lens; FP is the exit focal plane. (B) Echelle spectrograph for Raman spectrometry.

  5. Spectrograph. A spectrograph is an instrument that breaks up a wave into a frequency spectrum. These could be sound, light or radio waves. For example the frequency spectrum of light is the brightness (intensity) and the amount of each colour. There are several kinds of machines called spectrographs, used to look at different waves.

  6. 4 giorni fa · A spectroscope or spectrometer that produces a photographic record (spectrogram) of a spectrum.... Click for English pronunciations, examples sentences, video.

  7. Bloomsbury Publishing USA, Aug 29, 2013 - Social Science - 584 pages. The Spectralities Reader is the first volume to collect the rich scholarship produced in the wake of the “spectral turn” of the early 1990s, which saw ghosts and haunting conjured as compelling analytical and methodological tools across the humanities and social sciences.