Technology
The radioactive glow on luxury watch dials
HERE’S THE INTERESTING PART
That gentle glow on your absurdly expensive timepiece does not come from absorbing sunlight. It is powered by tiny glass tubes filled with a radioactive isotope of hydrogen. The radiation constantly excites a phosphor coating to produce light, meaning you strapped a controlled, miniature nuclear decay process to your wrist just to check the time in a dark movie theater.
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