🌍 observance
Cathode-Ray Tube Day
Sunday, December 20, 2026
— days to go
In 1838, Cathode Rays. German physicist Julius Plücker discovers cathode rays, laying the groundwork for the future invention of the cathode-ray tube
History
Discovery of Cathode Rays. German physicist Julius Plücker discovers cathode rays, laying the groundwork for the future invention of the cathode-ray tube
How It's Celebrated
Cathode-Ray Tube Day is observed by recognizing the importance of the day, learning about its background and significance, and sharing awareness with others through conversation and social media. Many people take time to reflect on the meaning of the observance and participate in relevant activities or community events.
Other Years
2021 Mon
20 Dec 2022 Tue
20 Dec 2023 Wed
20 Dec 2024 Fri
20 Dec 2025 Sat
20 Dec 2026 Sun
12/20 2027 Mon
20 Dec 2028 Wed
20 Dec 2029 Thu
20 Dec