(Nanowerk Spotlight) Optical spectrometers are devices that measure the variation in the absorption and emission of light over a range ( the change in the absorption and emission of light with ...
HERMES, the new spectrograph built at the AAO, uses volume phase holographic (VPH) gratings to provide various optimized spectra in blue, green and red light and a fourth band in infra-red light.
Researchers have successfully demonstrated a spectrometer that is orders of magnitude smaller than current technologies and can accurately measure wavelengths of light from ultraviolet to the ...
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