Calendar Of Science

Every month, Pacific Science Center publishes a Calendar of Science, a compendium of science facts to add a little knowledge to your daily routine. So, read on and discover a few things you may not have known. If you would like to receive a daily dose of science, subscribe to Calendar of Science on Twitter. We've also set up a Google Calendar to which you may subscribe. Have a comment or question? Please drop us a line. Remember, life's boring without discovery!


Aug. 31 1821-Birthday of physicist Hermann von Helmholtz, discovered the principle of conservation of energy.
Sept. 1 1997-Physicists Kirk McDonald and Adrian Melissinos announced they had converted photons into electrons and positrons.
Sept. 2 1877-Birthday of Frederick Soddy, proposed atoms of same element could have different atomic masses, invented the word isotope.
Sept. 3 1914-Birthday of marine biologist Dixie Lee Ray, who was the first director of Pacific Science Center.
Sept. 4 1882-The first electric power plant in the U.S. began operation, the Edison electric power station in New York City.
Sept. 5 1939-Birthday of the Japanese biologist Susumu Tonegawa, who discovered how white blood cells create antibodies.
Sept. 6 1908-Birthday of the English physicist Louis Essen, who invented the cesium atomic clock.
Sept. 7 1998-The search engine Google was launched by two Stanford University graduate students, Larry Page and Sergey Brin.
Sept. 8 2004-NASA spacecraft Genesis returned to Earth with samples of solar wind particles.
Sept. 9 1892-Astronomer Edward Barnard discovered Jupiter’s moon Amalthea.
Sept. 10 1954-Swanson introduced the frozen TV dinner. The first one contained turkey, mashed potatoes, and peas, and sold for 98 cents.
Sept. 11 1997-The Mars Global Surveyor went into orbit around Mars.
Sept. 12 1940-Five French schoolboys exploring the Lascaux Cave discovered 17,000 year old paintings which depicted prehistoric animals.
Sept. 13 1922-The world’s highest temperature, 136.4° F, was recorded at Al Aziziyah, Libya.
Sept. 14 1769-Birthday of naturalist Alexander von Humboldt, discovered the cold ocean current off the coast of Peru.
Sept. 15 1929-Birthday of Murray Gell-Mann, proposed existence of a fundamental particle of matter, named this particle the quark.
Sept. 16 1853-Birthday of biochemist Albrecht Kossel, discovered and named the four DNA nucleotides: adenine, cytosine, guanine, thymine.
Sept. 17 1857-Birthday of physicist Konstantin Tsiolkovsky, 1st to propose that people could travel into space using rockets.
Sept. 18 1819-Birthday of physicist Jean Foucault, invented the gyroscope and the Foucault pendulum.
Sept. 19 1848-Astronomers George Bond and William Lassell discovered Saturn’s moon Hyperion. 1st moon discovered which is not spherical.
Sept. 20 1519-Ferdinand Magellan set sail from Spain with 5 ships and about 260 men on first successful attempt to sail around the world.
Sept. 21 1853-Birthday of Heike Kamerlingh Onnes, discovered that metals become superconductors at temperatures close to absolute zero.
Sept. 22 1791-Birthday of physicist Michael Faraday, built 1st electric motor, 1st generator, 1st transformer.
Sept. 23 1846-Astronomer Johann Galle discovered Neptune using the prediction of its position given him by astronomer Urbain Leverrier.
Sept. 24 1879-Birthday of physicist Georges Claude, who invented the neon light.
Sept. 25 1644-Birthday of astronomer Ole Römer, 1st to measure the speed of light.
Sept. 26 1754-Birthday of Joseph-Louis Proust, discovered that elements in a compound always combine in a definite proportion by mass.
Sept. 27 1905-Physicist Albert Einstein published a paper in which he first stated the famous equation E=mc2.
Sept. 28 1860-Birthday of physicist Paul Villard, who discovered gamma rays.
Sept. 29 1954-The European Center for Nuclear Research (CERN) was founded in Geneva, Switzerland. Birthplace of the World Wide Web.
Sept. 30 1882-Birthday of physicist Hans Geiger, who invented the radiation detector which is now called the Geiger counter.