Tag: History of Science

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225 Years of UV Discovery: How a Jena Experiment Changed the World

22. February 202621. February 2026 by Reporter1

225 Jahre UV-Entdeckung: Wie ein Jenaer Experiment die Welt veränderte

Exactly 225 years ago, the physicist Johann Wilhelm Ritter discovered ultraviolet radiation in Jena. Today, this discovery serves as the foundation for modern chip production, medicine, and photonics.

The Invisible Light from Jena: Symposium Honors Discoverer Johann Wilhelm Ritter

16. February 202616. February 2026 by Reporter1

Das unsichtbare Licht aus Jena: Symposium ehrt Entdecker Johann Wilhelm Ritter

Jena is known worldwide as a City of Light, but many are unaware that a significant part of the light spectrum known today was discovered right here. This week, a historical milestone in physics takes center stage: the discovery of ultraviolet radiation by Johann Wilhelm Ritter over two centuries ago.