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It will take another twenty years before Franz Xavier Anton Riedel (member of a long line of glassmakers in practice for more than 260 years) is unable to produce two types of glasses fluorescents in 1830: a green which he baptized Eleonorengrün and a yellow which he gave the name of Annagelb, in tribute to his daughters Anna-Maria and Eleonora.
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First Marin Heinrich Klaproth, who discovered uranium in 1789 and then described the use of uranium oxide as a colorant for glass and porcelain 18 years later. But it is to two people in particular that we owe the birth and then the advent of the uraline. A surprise when you know how difficult uranium is to extract from pitchblende (the main ore for this radioactive element), leading some researchers to think that it could rather come from autunite, on which it is much easier to sample.įrom 1565, pitchblende is extracted from the Ore Mountains in central Europe, where it is used as a dye in industry canopy. It is indeed within an ancient mosaic, discovered in the villa of Pausilypon (in the Gulf of Naples) in 1911, that the researcher RT Gunther noticed several squares of pale green glass whose analysis revealed that they contained approximately 1% uranium oxide. The origins of uralinĪlthough the uraline only took off in the 19th e century, the first traces of uranium glass date back to the year 79 of our era. Before wondering if it is not reckless to fill your house with radioactive objects, let’s take a moment to look at the history of this funny invention. informed and perhaps to somewhat terrorize uninitiated radiophobes. e century! We often find the uraline exhibited in cabinets with a source of black light (or Wood’s light, a form of lighting that satisfactorily imitates UV radiation), allowing collectors to impress their visitors. Transparent, most often almost fluorescent yellow, its proportion of uranium generally varies between 0.1 and 2%, even if it can climb up to 25% for objects produced in the middle of the 19th century. Depression glass, produced during the economic crisis of the 1930s, used oxide of do to enhance its green tint, while Burmese glass uses colloidal gold to achieve its milky appearance, delicate variations of cream and pale pink.īut if you argue with purists, remember: there is only one real glass of Vaseline, and the rest are only pale imitations. Throughout history and the brands that have appropriated it, this material also responded to the name of uran glass, lemon glass, custard, florentine, jasmine, mustard, golden green and many more. The origin of the name ouraline » remains uncertain to this day, but since its invention, this uranium-enriched glass has acquired another name that collectors willingly use: « vaseline glass ” Where ” glass of Vaseline “, in reference to the cream from which it borrows the color (at the time of a light yellow slightly green) and, sometimes, the oily aspect.
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while the excitement of electrons in the glass causes its fluorescence. However, there is a very simple and quite spectacular way to identify it: place the object in a dark room, illuminate it with an ultraviolet beam, and you should then see it begin to shine with an intense green glow. This colored glass, which can be found in many forms – jewelry, table service, or even decorative object – could easily go unnoticed among the many crystal goblets and Art Deco vases adorning the tables and shelves of antique dealers. With a hue ranging from amber yellow to intense apple green, ouraline takes its color uranium oxide, or often diuranate (a anion of the radioactive element), which enter into its composition. Would you, for example, eat from a dish or drink from a glass containing uranium radioactive? For a brief period of history, this is exactly the fashion in which our Western societies indulged. Most sane people today have normally been taught to be wary of radiation, to dread the frenetic crackle of a racing Geiger counter, so much so that we may have become overly suspicious of radioactivity, forgetting gladly that this manifests itself, certainly to a lesser extent, all around us everyday.
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If in due time the death of Marie Curie was not enough to imprint on people’s minds the dangers inherent in the radioactivity, the use of the atomic bomb during the Second World War, followed by the nuclear tests of the Cold War and then the tragedy of Chernobyl have since largely justified the creation of the term ” radiophobia “. Make yourself a nice cup of tea, turn off the lights and turn on your UV lamp! In this new chapter of Cabinet of curiosities, we release our most beautiful tea set, our anti-radiation suit and our Geiger counter.