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In 1967, in response to industry demands, she founded and launched Optical Spectra. In 1982 the magazine's name was changed to Photonics Spectra to reflect the growing influence of these new light-based technologies. [1] Today, the worldwide distribution of Photonics Spectra is over 100,000 copies. [2]
Basic diagram of a hollow-cathode lamp Hollow-cathode lamps from an atomic absorption spectrometer. A hollow-cathode lamp (HCL) is type of cold cathode lamp used in physics and chemistry as a spectral line source (e.g. for atomic absorption spectrometers) and as a frequency tuner for light sources such as lasers.
This is similar to the situation in a hydrogen flame. Arc lamps made with ordinary light-hydrogen provide a very similar UV spectrum to deuterium, and have been used in UV spectroscopes. However, lamps using deuterium have a longer life span and an emissivity (intensity) at the far end of their UV range which is three to five times that of an ...
Republican Tom Barrett bested Democrat Curtis Hertel in Michigan's open 7th Congressional District contest.
Winston will face the Steelers on Sunday, a defense he recently beat in that delightful snow globe game back in Week 12. Aidan O’Connell kinda had his way with the Chiefs defense on Black Friday ...
A pair of Tren de Aragua gangbangers tied to an Aurora, Colorado apartment takeover were arrested in a major NYC drug trafficking bust Wednesday, The Post has learned.
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