Have you ever wondered why bits of cereal floating in milk tend to clump together or cling to the sides of a bowl? In fluid mechanics, this phenomenon is humorously called the "Cheerio effect," though it applies to any small, wettable object that floats, not just breakfast cereal. It is caused by a combination of buoyancy—the upward force a fluid exerts on an object of lower density—and surface tension—the elastic-like property of a liquid's surface. Where else might one observe this effect?
Lucy Maud Montgomery
Back in the day
By 1978, there had been at least 14 failed attempts to cross the Atlantic by balloon, during which five people died. One of the failures was that of the Double Eagle I in 1977. A year later, however, Ben Abruzzo, Maxie Anderson, and Larry Newman landed the Double Eagle II in a field in Miserey, France, 137 hours after leaving Presque Isle, Maine. After their successful flight, the trio drew straws to determine who would get to sleep in a bed at the US Embassy once slept in by whom?
Born on a day like today
Garvey was a Jamaican-born American proponent of black nationalism. His Universal Negro Improvement Association, established in 1914 to promote racial pride, quickly spread in black communities throughout the US, the Caribbean, and Central America, and Garvey became the most influential black leader of the early 1920s, with a following some two million strong. However, his movement foundered after his 1922 indictment for mail fraud. What religious movement considers Garvey one of its prophets?