(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 ...

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 ...

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.

A: The Sun emits light in virtually every part of the electromagnetic spectrum, albeit some more than others. The sunlight that we see — aptly named visible light — falls into only a very narrow range ...

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 ...