In the pocket watch era of the 18th and 19th centuries, if you want to read the time displayed on the dial in a poorly lit environment, you have to rely on zinc sulfide that is excited by the sun or light to slowly glow; however, the effect of this material is very general, and It is not obvious, and the night light will disappear quickly. Therefore, when Madame Curie discovered radium in 1898, it became possible for the watch to easily read the time in the dark. However, radium has a lot of radiation, which can cause serious harm to the human body, so it is later replaced by tritium gas with a slight amount of radiation. Best Breitling Avenger clone watches online, buy replica watches at firstwatchclone.co.
In modern times, Super-Luminova jointly developed by Japan and Switzerland is used as the main luminous material. Of course, there are thousands of luminous watches, especially with the current trend of popular sports watches, the importance of luminous function is even more important. Based on the luminous style, styling design, or topic of the watch, the author selected several unique luminous watches to show their charm in the dark.
Radium contains a large amount of radiation and emits alpha and gamma rays with a half-life of 1,600 years. Radon Gas is produced during natural decay, which has extremely strong radiation. As for the earliest use of radium in watches and clocks, it dates back to the First World War (1917). At that time, a group of women workers were asked to apply the compound of radium to the dial by the American Radium Luminous Material Corporation in its factory in New Jersey. The time scales and hands on the watch produce luminous light.
Tritium is also a radioactive element, which emits light after decay by beta rays, with a half-life of 12.43 years. Tritium will release a small amount of electron flow, so it can stimulate the luminous paint to emit light. Adding different content of phosphides can stimulate different colors of luminous. Tritium in nature is quite scarce. According to statistics from the US Department of Energy, from 1955 to 1996, the national output of tritium in the United States was only 225 kg, and the production cost per 1 gram in that year was as high as $30,000. Luminous Feature Design For Watches.
Luminova luminous materials were first produced by RC Tritec in Switzerland, and Nemoto & Co. in Japan took the lead in applying for monopoly. The two companies formed a joint venture in 1998 to form LumiNova AG Switzerland, and officially named this luminous material Super-Luminova. Its main component is strontium aluminate (SrAl2O4), which has photoluminescent properties and can excite noctilucent light by light, among which ultraviolet light has the best effect. The characteristics of non-radiation and environmental protection meet the needs of the times.
Chromalight is an exclusive luminous material developed by Rolex in 2008 and first appeared in the Rolex Deepsea series. It is composed of powders composed of metal oxides such as aluminum, strontium, dysprosium, and europium, and is artificially combined with resin, and evenly coated on the hour markers, hands, and the inverted triangle mark at 12 o'clock. Chromalight turns into crystals after high temperature, and emits blue luminous light, whose brightness is about twice that of ordinary luminous light. Many Rolex sports watches are currently using Chromalight luminous paint.
