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2. Radium dial - Wikipedia

   en.wikipedia.org/wiki/Radium_dial

   November 1917 ad for an Ingersoll "Radiolite" watch, one of the first watches mass marketed in the USA featuring a radium-illuminated dial. Radium was discovered by Marie and Pierre Curie in 1898 [1] and was soon combined with paint to make luminescent paint, which was applied to clocks, airplane instruments, and the like, to be able to read them in the dark.

3. The best sunrise alarm clocks of 2025 - AOL

   www.aol.com/lifestyle/best-sunrise-alarm-clocks...

   Sunrise alarm clocks offer a great way to help you wake up without an abrasive, loud alarm. ... A note about the night-light setting: The Restore 2 doesn’t have a night-light that you switch on ...

4. Radioluminescence - Wikipedia

   en.wikipedia.org/wiki/Radioluminescence

   Radioluminescence is used as a low level light source for night illumination of instruments or signage. Radioluminescent paint is occasionally used for clock hands and instrument dials, enabling them to be read in the dark. Radioluminescence is also sometimes seen around high-power radiation sources, such as nuclear reactors and radioisotopes.

5. Radium Dial Company - Wikipedia

   en.wikipedia.org/wiki/Radium_Dial_Company

   The Radium Dial Company was one of a few now defunct United States companies, along with the United States Radium Corporation, involved in the painting of clocks, watches and other instrument dials using radioluminescent paint containing radium. The resulting dials are now collectively known as radium dials.

6. The 12 best gifts for your son’s girlfriend: From birthdays ...

   www.aol.com/lifestyle/best-gifts-for-sons...

   Loud, blaring alarm clocks are out, and you son’s girlfriend knows it—so treat her to the easiest wakeup ever with the Hatch Restore 2, which uses a light that mimics the sun to help you ...

7. Luminous paint - Wikipedia

   en.wikipedia.org/wiki/Luminous_paint

   Radioluminescent paints will glow without exposure to light until the radioactive isotope has decayed (or the phosphor degrades), which may be many years. Because of safety concerns and tighter regulation, consumer products such as clocks and watches now increasingly use phosphorescent rather than radioluminescent substances.