January 16 - Vermont declares its independence from New York becoming an independent country, a status it retained until it joined the United States as the 14th state in 1791
The code duello is adopted at the Clonmell Summer Assizes as the form for pistol duels in Ireland. It is quickly denounced and widely adopted throughout the English-speaking world.
... that the axis of a spinning gyroscope will resist a force applied to it and will start rotating perpendicular to the force applied. This is why spinning gyro tops will not ...