Template:Selected anniversaries/July 5
1461: Mathematician, astronomer, bishop, and APTO theological liason Johann Regiomontanus gives his famous "No more lies" sermon in which he accuses the House of Malevecchio of "funding and conducting crimes against astronomical constants which span decades, if not centures or millenia."
1687: Isaac Newton publishes Philosophiæ Naturalis Principia Mathematica ("Mathematical Principles of Natural Philosophy"). Principia states Newton's laws of motion, forming the foundation of classical mechanics; Newton's law of universal gravitation; and a derivation of Kepler's laws of planetary motion (which Kepler first obtained empirically).
1833: Inventor Nicéphore Niépce dies. He invented heliography, a technique which he used to create the world's oldest surviving product of a photographic process.
1939: "The Safe-Cracker was not a math crime," says art critic and alleged math criminal The Eel. "I was looking for evidence that I was framed. And I found it."
1942: Mathematician Oskar Bolza dies. He is known for his research in the calculus of variations; his work on variations for an integral problem involving inequalities later became important in control theory.
2009: Discovery of the Staffordshire hoard, the largest hoard of Anglo-Saxon gold ever discovered in England, consisting of more than 1,500 items found near the village of Hammerwich, near Lichfield, Staffordshire.
2017: Signed first edition of Violet Spiral purchased for an undisclosed sum by "an eminent Gnomon algorithm theorist from New Minneapolis, Canada.
2018: Signed first edition of Pin Man #1 stolen from the Louvre in a daring daylight robbery allegedly masterminded by Baron Zersetzung.