1 ° April 1976 - In the Jobs family garage in Cupertino, California, the Apple Computer Company
3 April 1973 - Francis Dorion obtains the patent for the double edge razor developed for Gillette
4 April 1932 - Charles Glen King and Albert Szent-Gyorgyi discover L-ascorbic acid, more commonly known as Vitamin C
5 April 1817 - The is presented draisine: with two wheels, one of which is steering, it was the first bicycle
6 April 1909 - US explorer Robert Peary becomes the first man to reach the North Pole
10 April 1849 - American inventor Walter Hunt gets a patent for the invention of safety pin
10 April 1926 - The Norge airship by Umberto Nobile departs from Ciampino: it will arrive as far as King's Bay in Norway and then in Alaska after being the first to fly over the North Pole
11 April 1876 - In New York John Zachos obtains the patent for the invention of stenotype machine
11 April 1976 - The computer is introduced Apple I, the first Apple Computer product designed by Steve Wozniak and Steve Jobs, just 10 days after the company was founded
12 April 1633 - Starts in Rome on trial of Galileo Galilei, supporter of the heliocentric Copernican theory on the motion of celestial bodies, in contrast to the geocentric one supported by the Catholic Church
12 April 1827 - In Stockton-on-Tees, English inventor and pharmacist John Walker sells the first match, which he accidentally invented the previous year by combining potassium and antimony
12 April 1981 - Take it off Space Shuttle Columbia: from 1975 it is the first manned space mission of the NASA Shuttle project
13 April 1970 - The Apollo 13 accident occurs which forces the crew to launch the now famous message "Okay, Houston, we've had a problem here!"
14 April 1896 - The Kellog brothers get the patent for the invention of corn flakes
16 April 1943 - Swiss chemist Albert Hoffmann unwittingly discovers the psychedelic effects of lysergic acid (LSD), which he synthesized 5 years earlier: the accidental fall of a few drops of substance on his hand causes hallucinations and severe dizziness
18 April 1902 - Denmark introduces the use of fingerprints for the identification of criminals. Already in 1788 the German anatomist Mayer had described the recurring characteristics stating the uniqueness of the papillary impressions from individual to individual
20 April 1902 - Pierre and Marie Curie, together with Andre Debierne, announce that they have succeeded in isolate radium, an element discovered four years earlier by the famous pair of physicists
21 April 1972 - TheApollo 16 touches the lunar surface: this is the tenth manned mission of NASA's Apollo program
23 April 1946 - Enrico Piaggio, of Piaggio & CSpA, obtains the patent for the Wasp. The innovative and iconic Italian motorcycle was designed by the aeronautical engineer Corradino D'Ascanio who, detesting motorcycles, invents the first motorcycle with a load-bearing body, without a tubular steel structure and, therefore, without a central tunnel
23 April 1984 - In Washington, the announcement of the identification of theHIV, the virus responsible for AIDS
23 April 2005 - With the registration of the first user it is launched YouTube, the web platform for sharing and viewing video content
24 April 1934 - In Chicago, US engineer Laurence Hammond announces the invention of theHammond, the electric organ without pipes
24 April 1990 - The Space Shuttle Discovery shuttle puts the Hubble Space Telescope, one of the largest and most versatile
25 April 1953 - James D. Watson and Francis Crick announce the discovery of the double helix structure of DNA
28 April 2001 - Billionaire Dennis Tito becomes the first space tourist with the Soyuz TM-32 mission: it remains in orbit for 7 days, 22 hours and 4 minutes, for a total cost of the "journey" of about 20 million dollars
30 April 1876 - The German doctor Robert Koch manages for the first time to isolate a bacterium outside the body. It's about the Bacillus anthracis, dangerous bacterium cause of anthrax, acute infectious disease