zincite detector

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Zincite — crystals can be grown artificially and synthetic zincite crystals are available as a by product of zinc smelting. Synthetic crystals can be colorless or range in color from dark red, orange, yellow to light green. Both natural and synthetic… … Wikipedia
Cat's-whisker detector — Galena cat s whisker detector Precision cat s whisker d … Wikipedia
Greenleaf Whittier Pickard — Infobox Scientist name = Greenleaf Whittier Pickard caption = birth date = birth date|1877|2|14 birth place = death date = death date and age|1956|1|8|1877|2|14 death place = residence =United States nationality = American field = Electrical… … Wikipedia
Greenleaf Whittier Pickard — (14 février 1877 à Portland, Maine 8 janvier 1956 àNewton (Massachusetts)) était un pionnier dans le domaine radiophonique aux États Unis. Il a été chercheur dans les premiers temps de la transmission sans fil. Il a… … Wikipédia en Français
Crystal radio — Crystal set redirects here. For the Australian rock band, see The Crystal Set. A modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device… … Wikipedia
Cincita — General Categoría Minerales óxidos Clase 4.AB.20 (Strunz) Fórmula química Z … Wikipedia Español

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