Video encyclopedia

Flashback calendar

The last Pyrenean ibex is found dead

The Pyrenean Ibex was one of four subspecies of the Iberian ibex. It was the second one, with the last individual, a female called Celia, found dead in 2000. Scientist attempted to bring Ibexes back from extinction via cloning, however, the only living specimen died after few minutes.

Soviet physicist Pavel Cherenkov dies

Pavel Cherenkov was a Soviet physicist who was awarded the Nobel Prize in physics. Cherenkov studied physics and mathematics at Voronezh State University. He became known for observing the emission of blue light. The Cherenkov Effect and the Cherenkov detector were dubbed after him.

British biologist John Maynard Smith is born

John Maynard Smith published book entitled Evolution and the Theory of Games, where he presented the Hawk-Dove game model. In 1986 he was awarded the Darwin Medal. Maynard Smith died of mesothelioma on 19 April 2004.

Alfred Wegener presents his theory of continental drift

Alfred Lothar Wegener was a German polar researcher, geophysicist, and meteorologist. He is known mainly for his theory of continental drift as in 1912 he presented his hypothesis that the continents are slowly drifting around the Earth.

Czech scientist Gregor Mendel dies

Gregor Johann Mendel was a scientist, Augustinian friar and abbot of St. Thomas' Abbey in Brno. He gained posthumous recognition as the founder of the modern science of genetics. Mendel's pea plant experiments conducted between 1856 and 1863 established many of the rules of heredity.

French educator Louis Braille dies

Louis Braille was a French educator and inventor of a system of reading and writing for the blind or visually impaired. Braille‘s system was recognized posthumously as a revolutionary invention and remains unchanged to this day. It has been adopted worldwide and is known as braille.

Léon Foucault proves rotation of the Earth

Jean Bernard Léon Foucault was a French physicist who became recognized for his demonstration of the Foucault pendulum, a device demonstrating the effect of Earth’s rotation. Additionally, he made an early measurement of the speed of light and discovered eddy currents.

The forerunner of Morse code is first demonstrated

Samuel Morse’s telegraph system was used for the first time at the Speedwell Iron Works in Morristown in New Jersey. Morse code is a system that uses dots and slashes which present numbers and letters.

German businessman Heinrich Schliemann is born

Heinrich Schliemann was a German businessman and an archeologist. His work was founded on the beliefs that Homer’s Iliad and Virgil’s Aeneid reflect real historical events. Along with Arthur Evans, he was a pioneer in the study of Aegean civilization.

Anniversaries of the (in)famous