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.
From Victor Frankenstein to Lex Luthor, from Dr. Moreau to Dr. Doom, readers have long been fascinated by insane plans for world domination and the madmen who devise them. Typically, we see these villains through the eyes of good guys. This anthology, however, explores the world of mad scientists and evil geniuses—from their own wonderfully twisted point of view. An all-star roster of bestselling authors—including Diana Gabaldon, Daniel Wilson, Austin Grossman, Naomi Novik, and Seanan McGuire...twenty-two great storytellers all told—have produced a fabulous assortment of stories guaranteed to provide readers with hour after hour of high-octane entertainment born of the most megalomaniacal mayhem imaginable. Everybody loves villains. They're bad; they always stir the pot; they're much more fun than the good guys, even if we want to see the good guys win. Their fiendish schemes, maniacal laughter, and limitless ambition are legendary, but what lies behind those crazy eyes and wicked grins? How—and why—do they commit these nefarious deeds? And why are they so set on taking over the world? If you've ever asked yourself any of these questions, you're in luck: It's finally time for the madmen's side of the story. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
Green Health: An A-to-Z Guide examines the green movement within the contexts of personal health and the healthcare industry, focusing on consumer lifestyles and how they affect resource conservation, pollution prevention, and environmental management. The scope of the title involves the societal goals of protecting human health and reducing the ecological footprint of healthcare. With approximately 150 signed entries written from global viewpoints by university professors and experts, Green Health: An A-to-Z Guide explores topics ranging from ecologically sustainable pharmaceuticals to the health risks of fossil fuels, biological stressors, the precautionary principle and wellness, organic food and health, hazardous waste, drinking water, the greening of healthcare, and more. Vivid photographs, searchable hyperlinks, numerous cross references, an extensive resource guide, and a clear, accessible writing style make the Green Society volumes ideal for classroom use as well as for research.
Watches are worthwhile investments. Of course not all watches, but only certain ones, special ones, selected ones. But not so special that you could not just buy them. At least some of them. How to recognize what in this form of investment pays off, this book is all about. Like all luxury goods, a watch must be rare and in demand to rise in value. Therefore, all consumer goods decrease in value – but not luxury goods: Luxury goods are rare, not available, scarce, durable and timeless, thus stable in value and therefore in demand. This book will give you all the details of investing in luxury watches in a nutshell and focused on the crucial information, so once you've read it, you immediately can go and buy your first watch as an investment.
This invaluable, practical book is written by a watch repairer with over twenty years' experience. It is aimed principally at the novice mechanical watch repairer, although those with more experience will also find it most useful. Brimming with advice and useful tips, it provides step-by-step photographs with accompanying text and demonstrates how to maintain a mechanical watch, and how to identify problems and correct them. The author discusses the theory behind how a watch works and reveals how to take a watch apart and how to reassemble it without causing any damage. Each section of the book is related to a particular element within the watch, and the author clearly explains the function and design of each part. He covers the essential requirements of a workspace, discusses basic tools, and how to use and care for them and illustrates how to take a mechanical watch apart and re-assemble it. He goes on to examine types of watch cases, case backs and how to open and re-fit them, as well as the movement and removing the movement from the case. He demonstrates how to remove the hands and the dial, and discusses motion work and the removal of the cannon pinion. He also pays attention to keyless-work, the mainspring and the barrel, the balance wheel, the escapement, the gearing and the gear train, pivots and arbors, bearings and jewels, and much more. The book also shows the reader how to service, clean and oil a watch, and how to successfully complete common repairs and make basic adjustments. Essential reading for all those interested mechanical watch repair, and superbly illustrated with 337 colour photographs.