George Stephenson’s “Locomotion No. 1” became the first steam locomotive to carry passengers on a public rail line, the Stockton and Darlington Railway in England on this day in 1825.

Did you know that:

• The physics journal Annalen der Physik published Albert Einstein’s paper introducing the equation E=mc² on this day in 1905
• Henry Ford’s first Ford Model T automobile left the Piquette Plant in Detroit, Michigan on this day in 1908
• Anacleto Montero Sanchez received a patent for a hypodermic syringe on this day in 1977