Optical spectrometer
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An optical spectrometer is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. Th
Spektrometr
Internal structure of a grating spectrometer: Light comes from left side and diffracts on the upper middle reflective grating. The wavelength of light is then selected by the slit on the upper right corner.
A very simple spectroscope based on a prism
The KMOS spectrograph.
Joseph von Fraunhofer
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Joseph Ritter von Fraunhofer was a German physicist and optical lens manufacturer. He made optical glass, an achromatic telescope, and objective lenses. He developed diffraction gratings and also inve
Optical spectrometer
…for example, through the use of quantum dot-based filter arrays on to a CCD chip or a series of photodetectors realised on a single nanostructure. Joseph von Fraunhofer developed the first modern spectroscope by combining a prism, diffraction slit and telescope in a manner that increased the spectral resolution and was…
Joseph v Fraunhofer
Fraunhofer demonstrating the spectroscope
The 9"-aperture refractor telescope with which Neptune was discovered
Opere, 1888