📁 Mysteries
2 Stories
Unsolved problems, conjectures, and mathematical puzzles
👤 Otto von Guericke
The Horses That Couldn't Pull Apart
In 1654, Otto von Guericke used sixteen horses and two copper spheres to prove that air has weight,…
👤 Karl Landsteiner
The Clot That Spoke Blood's Secret
In 1901, Karl Landsteiner mixed blood on glass slides to find a hidden pattern. His discovery of bl…