Cosmic Exploration · discovery

X-rays

1895 · Wilhelm Röntgen

Year
1895

Description

A screen across the room fluoresced while a covered discharge tube was running. Within months the effect was being used to photograph bones, before anyone knew what the rays were.

Discoverer

Referenced by

researcher

Open on the Cosmic Exploration shelf — the interactive card, the filters, and everything alongside it.

From the Discoveries database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.