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Flashback calendar

Apollo 14 lands

The landing took place at Fra Mauro formation. It was originally the target of the unfortunate Apollo 13 mission. Commander Alan Shepard hit two golf balls on the lunar surface with a makeshift club he had brought with him. As of December 2017, it was the first and only game of golf ever played on a foreign celestial body.

Pi = 3.2 by law

The General assembly of the American state Indiana passed Bill No.246 which in effect gave 3.2 exactly as the value of pi. It stated, in part, "the ratio of the diameter and circumference (pi) is as five-fourths to four." That is 3.2 exactly. The bill never became law, due to the intervention a mathematician, who happened to be present.

American inventor Hiram Maxim is born

Maxim developed the first portable, fully automatic machine gun. He also invented mousetrap, hair-curling irons, and steam pumps. He laid claim to inventing the lightbulb. Because of lengthy patent disputes with Thomas Edison over his claims, he moved from the USA to England. Maxim even experimented with powered flight.

Scottish inventor John Boyd Dunlop is born

By training, Dunlop was a veterinary surgeon. Familiar with making rubber devices, he re-invented pneumatic tires for his child's tricycle and developed them for use in cycle racing. Then he sold his rights to the pneumatic tires to a company he formed, Dunlop Pneumatic Tyre Company, for a small cash sum and a small shareholding.

Anniversaries of the (in)famous