logo

Video encyclopedia

Flashback calendar

Apollo 16 launch

Apollo 16's landing spot was in the highlands. Astronauts obtained older lunar material than in older the first four landings, which were in or near lunar maria. Samples from the Descartes Formation and the Cayley Formation disproved a hypothesis that the formations were volcanic in origin. Apollo 16 left a microsatellite on lunar orbit.

English chemist Rosalind Franklin dies

Franklin is best known for her work on the X-ray diffraction images of DNA. Between them was the famous Photo 51. It was used by James Watson and Francis Crick to deduce the double-helix structure of DNA. She could have won the Nobel Prize for the photo, but she died at age 37 and Nobel Committee does not make posthumous nominations.

Programming language LISP has its first public presentation

Lisp is a family of computer programming languages with a long history and a distinctive, fully parenthesized prefix notation. Lisp is the second-oldest high-level programming language in widespread use today. Lisp has changed since its early days, and many dialects have existed over its history.

LSD hallucinogenic effect is observed for the first time

Swiss chemist Albert Hofmann has synthesized the substance five years earlier when he was looking for a substance useful in treating respiratory problems. On April 1943, he accidentally absorbed some of the drugs through his skin from touching its container. LSD affected his nervous system. Hofmann became dizzy with hallucinations.

Harriet Quimby becomes the first female pilot to fly across the English Channel

Harriet Quimby was an early American aviator and a movie screenwriter. She was awarded a U.S. pilot's certificate by the Aero Club of America, becoming the first woman to gain a pilot's license in the United States. She also became the first woman to fly across the English Channel and had a major influence on the role of women in aviation.

American aviator Wilbur Wright is born

With his brother Orville, Wilbur Wright co-invented the first powered airplane capable of sustained, controlled flight. Its main innovation was the three-axis control. It enabled the pilot to steer the aircraft effectively and to maintain its equilibrium. This method became and remains standard on fixed-wing aircraft of all kinds.

Anniversaries of the (in)famous