Illustration of the value of π

The number π (pi) is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, though it is sometimes approximated as ⁠22/7⁠. Its decimal representation never ends, nor does it enter a permanently repeating pattern. The digits of π appear to be evenly distributed, but no proof of this conjecture has been found. It appears in many formulae in mathematics and physics, and for thousands of years mathematicians have computed its value with increasing accuracy. Since the late 20th century, mathematicians and computer scientists have extended the decimal representation of π to many trillions of digits. Many equations from trigonometry and geometry rely on π, especially those concerning circles and spheres. A transcendental number, π is one of the most widely known mathematical constants. (Full article...)

Charlotte Brontë

• ... that the first novel by Charlotte Brontë (pictured) was published posthumously?
• ... that Agostino Steffani missed the 1709 premiere of his opera Amor vien dal destino because he was in Rome mediating between the pope and the emperor?
• ... that John H. Beyer co-founded an architectural firm in 1968 that opposed large-scale urban redevelopment, inspired partly by the book The Death and Life of Great American Cities?
• ... that the Eurovision performance of "Bird of Pray" featured a backing vocalist whose song had been defeated during selection?
• ... that a key moment in the 2022 LastPass data breach saw an attacker compromise an engineer's Plex account?
• ... that cameraman Bob Broughton, who later became a Disney Legend, was first hired there by mistake?
• ... that more than 2,000 children's artworks were used in the music video for Meg Myers's cover of "Running Up That Hill"?
• ... that the mayor of El Paso, Texas, founded a tequila company that sells its product in dog-shaped bottles?
• ... that a five-year-old girl donated her favourite rock to Poole Museum, after which it was put on display and became the museum's most famous object?

Jasprit Bumrah

• In cricket, the Men's T20 World Cup concludes with India defeating New Zealand in the final (player of the match Jasprit Bumrah pictured).
• Mojtaba Khamenei is elected Supreme Leader of Iran following the assassination of his father, Ali Khamenei.
• Flooding in Kenya leaves at least 43 people dead.
• The Winter Paralympics open in northern Italy.
• The Rastriya Swatantra Party and its prime ministerial candidate Balen Shah win a landslide victory in the Nepalese general election, called after the Gen Z protests.

March 14: Sikh New Year's Day; White Day in parts of East Asia; Pi Day

Catherine Cornaro

• 1489 – Catherine Cornaro (pictured), Queen of Cyprus, was forced to abdicate and sell the administration of the island to the Republic of Venice.
• 1593 – Japanese invasions of Korea: A force of 3,000 Korean soldiers successfully defended Haengju Fortress against 30,000 Japanese invaders.
• 1885 – The Mikado, Gilbert and Sullivan's most frequently performed Savoy opera, debuted at the Savoy Theatre in London.
• 1945 – The Royal Air Force first used the Grand Slam, a 22,000 lb (10,000 kg) earthquake bomb, on a strategic railway viaduct in Bielefeld, Germany.
• 1991 – Escondida, one of the most productive copper mines in the world, was officially inaugurated.