The idea of a spectrophotometer is simple enough – shine light through a sample, send that light through a diffraction grating ... This is how real spectrophotometers are put together, but ...

Q: What are diffraction gratings ... clinical analysers and spectrophotometers, to a large spectrograph and a space explorer. Q: How did Hitachi establish its advanced grating technology?

Sure, a hacker could make one if he or she put their mind to it. But make one out of a webcam, some cheap diffraction grating purchased off ebay and some scrap? Surely not. [Renaud] pulls off this ...

now markets two high-performance spectrophotometers manufactured by Bruins Instruments ... The illumination system contains double-grating monochromators and a high-speed grating drive, which, coupled ...