![]() ![]() ![]() Given that luminous watches obtain their glow from radioactive elements, you may be wondering whether they are dangerous to you as a user. With the knowledge and history behind l uminous watch production, we explore whether owning a luminous watch is dangerous for your health. With only 10 minutes of exposure to light, LumiBrite can shine up to 5 hours in the dark. LumiBrite: This technology uses a strontium aluminate base together with europium and dysprosium that makes it more effective at emitting light. Presently, Super-Luminova is available in over 3000 different colors in varying brightness. Super-LumiNova: This was invented in 1993 and it uses strontium aluminate to absorb and emit light. Chromalight comes in distinctive blue color. Chromalight is portrayed to have superior brightness and longevity compared to other technologies. Technologies Used to Make Luminous WatchesĬhromalight: This technology was introduced in 2008 by Rolex with its Deepsea watch. Photoluminescent technologies like Super-LumiNova, LumiBrite, and Chromalight are presently used to make luminous watches. They do not shine very long especially in absence of light. They absorb light during the day, store it, and gradually re-emit it at night as a bright glow. Our present paints are using non-radioactive photoluminescent materials which contain strontium aluminate that acts as light banks. It only takes a few years up to a decade before the glow is gone. However, radium paint gradually loses its shine with time as a result of phosphor deterioration. This is what gave the watches their glow initially. It produces its light through radioactive decay. Radioactivity was first discovered in the 20th century and with it, came the production of radioluminescent elements: radium paint. All in all, you may be wondering what makes a luminous watch glow? While there may be few luminous watch designs in the market today, watch manufacturers are constantly innovating on the luminous dial to find a perfect illuminator. They are also commonly used in military applications. They provide a convenient way of telling time in the dark. ![]()
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