Fortune Telling Collection - Horoscope - Polaris clock removal _ Polaris clock removal and installation
Polaris clock removal _ Polaris clock removal and installation
What is the handwriting on the old Polaris clock painted with?
Phosphorescent material. The words on the old Polaris clock are coated with phosphorescent material. A common phosphorescent material is radioactive tritium gas, which can emit weak green fluorescence. Tritium gas is a radioactive isotope with radioactive decay properties. It can release energy and excite phosphorescent substances to emit light.
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