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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]
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 ordinary hydrogen arc bulb, at the same temperature.
Many mini sets use standard 3 mm dome-shaped LEDs, and have a plastic cover over them to provide refraction, which is an important step in diffusing the unidirectional light they cast. These covers come in C5, C6, and C7 sizes (5 ⁄ 8, 3 ⁄ 4, and 7 ⁄ 8-inch, or 16, 19, and 22 mm diameters, respectively) pointed "strawberries", G12 (12mm or ...
The U.S. Coast Guard suspended its search for four missing boaters near Bodega Bay in California around 6:30 p.m. Sunday following a rescue mission that lasted approximately 57 hours. “The ...
The 17-year-old suspect in a shooting last week that killed two people and injured eight during Halloween celebrations in downtown Orlando, Florida, has been charged as an adult, authorities said. ...
“The Daily Show” host Jon Stewart said President-elect Trump’s win this week feels different than when he won in 2016, during his latest podcast episode of “The Weekly Show.” “This ...
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