In 1825 – William Sturgeon exhibited the electromagnet in a practical form for the first time. The exhibition accompanied the reading of a paper, recorded in the Transactions of the Society of Arts for 1825 (Vol xliii, p.38).
In 1908 – John Bardeen was born. He grew up to win the Nobel Prize twice, once for inventing the transistor, and once for figuring out superconductivity.
In 1995 – Sun Microsystems Inc. announced the programming language Java and the accompanying Web browser HotJava at the SunWorld ’95 convention.