Radioluminescence dating Sex of a virgo

15-Aug-2019 00:16

Spectrum of a blue/green electroluminescent light source for a clock radio (similar to the one seen in the above image).

Peak wavelength is at 492 nm and the FWHM spectral bandwidth is quite wide at about 85 nm.

Electroluminescence is the result of radiative recombination of electrons & holes in a material, usually a semiconductor.

The excited electrons release their energy as photons - light.

Later in the 1960s, Sylvania's Electronic Systems Division in Needham, MA developed and manufactured several instruments for the Apollo Lunar Lander and Command Module using electroluminescent display panels manufactured by the Electronic Tube Division of Sylvania at Emporium, PA.

Raytheon, Sudbury, MA, manufactured the Apollo guidance computer, which used a Sylvania electroluminescent display panel as part of its display-keyboard interface (DSKY).

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These lamps have proven extremely reliable, with some samples known to be still functional after nearly 50 years of continuous operation.The infrared radiofluorescence (IR-RF) dating technique was applied to eight fluvial samples that were collected from two sediment cores at the Heidelberg Basin located near Viernheim and Ludwigshafen in southwest Germany.Based on the IR-RF derived ages of the samples it was possible to establish a chronological framework for the Mid-Pleistocene fluvial deposits of the Heidelberg Basin.By making one of the contacts transparent, the large area exposed emits light.

Electroluminescent automotive instrument panel backlighting, with each gauge pointer also an individual light source, entered production on 1960 Chrysler and Imperial passenger cars, and was continued successfully on several Chrysler vehicles through 1967.Powder phosphor-based electroluminescent panels are frequently used as backlights for liquid crystal displays.

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