Self-luminous tritium tube necklace (3 colors)

https://youtu.be/7R9oQ0N_qQU The fascinating element that self-luminescence can reach more than 25 years is here! Tritium tubes are mostly used to identify dark places, such as diving watches, warning devices, pistol sights... etc.; At the same time, it is also convenient to quickly find the item in the dark, so military use is also very common. The use of key rings and necklaces is more life-like, and it is a creative combination of chemical elements and daily wear. https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_56d8a88b-647d-471a-bbb6-876a474a8449.jpg https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_95bf4d74-fd6a-491c-bd58-d6b727ba4060.jpg Tritium tube, also known as tritium lamp, beta lamp, is a light-emitting device manufactured by the radioactivity of the hydrogen isotope tritium. Tritium is a radioactive element, and its content in nature is extremely low, so it must be synthesized by artificial methods, and the output is very limited. According to a report by the US Department of Energy, from 1955 to 1996, the output of tritium in the United States was only 225 kg, mostly for military purposes. And because tritium decays into helium, the remaining tritium does not exceed 75 kg. The amount of tritium for commercial use worldwide is about 400 grams per year, and the cost per gram is as high as US$30,000. The structure of the tritium tube is very simple, that is, the inner wall of a borosilicate glass tube is coated with fluorescent paint, filled with a small amount of tritium gas, and sealed. The tritium gas will evenly release a small amount of electrons to excite the fluorescent material on the tube wall to make it glow. If you fill the tritium tube with a small amount of phosphide, you can change the color of the tritium tube. Depending on the phosphide content, the tritium tubes currently produced are green, red, blue, yellow, purple, orange and white. In daily life, the most common place for tritium trachea is luminous watch. The light emitted by the tritium tube is very weak, and it is not visible during the day, but the visible distance can reach several meters at night. Because the half-life of tritium is 12.43 years, the service life of the tritium tube on this type of luminous watch is about 10 to 20 years. During this period, the light of the tritium tube will gradually weaken. After more than two half-lives, that is, after 24 years, the light on the watch is very weak. Although the content of tritium in a watch is very small, only no more than 10 micrograms, because the price of tritium is very expensive, watches using tritium tubes are often more expensive. Otherwise, the cost of the tritium tube will exceed the cost of the watch itself. For a new watch, the brighter the tritium tube on it, the higher the tritium content and the higher the cost. To put it simply, the super night light must absorb the light source before it can emit light, but after about 30 minutes, there will be no night light visible, and the light source must be absorbed again. The tritium tube maintains a constant brightness, but it cannot show the night light effect when the light source is sufficient during the day. (Source: deep blue) https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_5d07cafb-03a8-4430-ae65-6e3333346ce7.jpg https://5993.cyberbiz.tw/s/files/5993/ckeditor/pictures/content_8707343b-a83f-44ce-8307-afb8b1483186.jpg Specifications: ► Tritium tube size: 0.8 x 3 cm ► Leather rope size: 60 cm ► Material: glass, stainless steel, synthetic leather ► Place of manufacture: Tritium tube: imported from Holland; key ring: Taiwan Precautions: ► The product does not need to be charged at all, and the self-luminous time can reach more than 12 years. ► Please don't wear it when engaging in water activities to avoid damage to the glass tube. ► Avoid strong collision to avoid breaking the glass tube.