This Day in History – Superconductivity

On this day in 1911 Heike Kamerlingh Onnes dipped a wire made of solid mercury into liquid helium and lowered the temperature. At 4.2 K, the wire’s electrical resistance suddenly vanished.

Onnes wrote in his lab book: “Mercury has passed into a new state, which on account of its extraordinary electrical properties may be called the superconductive state.” He had discovered superconductivity! Via Physics Today.

This entry was posted in This Day in History. Bookmark the permalink.

Leave a Comment (email & website optional)