[Télécharger] Vintage Watches - Radium and Tritium: Luminous paint on dial and hands (English Edition) de Thomas M. Meine Livres En Ligne
Télécharger Vintage Watches - Radium and Tritium: Luminous paint on dial and hands (English Edition) de Thomas M. Meine Livre PDF Gratuit
Télécharger "Vintage Watches - Radium and Tritium: Luminous paint on dial and hands (English Edition)" de Thomas M. Meine PDF Ebook En Ligne
Auteur : Thomas M. Meine
Catégorie : Boutique Kindle,Ebooks Kindle,Ebooks en langues étrangères
Broché : * pages
Éditeur : *
Langue : Français, Anglais
Radium, Tritium and other radioactive activators on watch dials and hands. Radium and Tritium contained as activators in luminous paint on watch dials and hands, besides other radioactive materials, are subject to never ending discussions amongst vintage watch collectors, especially those, who own lumed timepieces from earlier periods or are even working on them. Opinions differ from what concerns eventual health risks, not only amongst watch collectors, but also between professionals. Many ask themselves why those watches should still pose a threat to human health, whilst the 'glow' is long gone. True, the glow is gone - but not the radium (or many other radioactive substance used as an activator, as well as other substances following down the decay chain. The intention of this book is to give a general overview of radium- and tritium issues for the vintage watch collector interested in this subject. It is, in no way, addressing the physicists, chemists or nuclear scientists and will not go far beyond the necessary for a basic understanding, although a few more scientific issues could not be avoided.It is a book for all who are interested to look beyond a meager statement like: Luminous paint on watch dials and hands containing radium or tritium can be dangerous to some extend, especially when substances get inside the body, but all is relative and subject to different opinions.Content: Luminous paint in the watch industry - Luminescence, fluorescence and phosphorescence - Zinc sulfide - The activators, radium, tritium and others - Atoms, molecules and other particles - Radioactivity, radioactive decay, types of radiation, effects on health - Radioactive decay chain - uranium 238 to lead 206 - Strontium, the bone seeker / Promethium - Measuring radioactive radiation - Purchase of lumed vintage watches - Radon issues - Replacing luminous paint on watch dials and hands - What's left? - Conclusion - The Radium Girls.
Télécharger Vintage Watches - Radium and Tritium: Luminous paint on dial and hands (English Edition) de Thomas M. Meine Livre PDF Gratuit
Vintage Watches - Radium and Tritium: Luminous paint on ~ Radium, Tritium and other radioactive activators on watch dials and hands. Radium and Tritium contained as activators in luminous paint on watch dials and hands, besides other radioactive materials, are subject to never ending discussions amongst vintage watch collectors, especially those, who own lumed timepieces from earlier periods or are even working on them.
Radium dials - Wikipedia ~ Radium dials are watch, clock and other instrument dials painted with radioluminescent paint containing radium-226.Radium dial production peaked in the first decade of the 20th century as radiation poisoning was then unknown; subsequently, radium dials have largely been replaced by phosphorescent- or occasionally tritium-based light sources.
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Radium girls: The dark times of radioactive paint - CNN Style ~ In 1917, glow-in-the-dark watches were all the rage. But the girls who painted them with radioactive paint weren't told how dangerous it was.
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REALLY? - The New York Times ~ Radium was eventually banned after scores of dial painters died from cancer and various ghastly ailments. But many of the so-called radium watches are still around today, considered antiques and .
Super-LumiNova - Wikipedia ~ Super-LumiNova is a brand name under which strontium aluminate–based non-radioactive and nontoxic photoluminescent or afterglow pigments for illuminating markings on watch dials, hands and bezels, etc. in the dark are marketed. This technology offers up to ten times higher brightness than previous zinc sulfide–based materials.. Super-LumiNova is based on LumiNova pigments, invented in 1993 .
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