The Occultation of a Star by the Moon

Nicolaus Copernicus (Mikolaj Kopernik), a Polish Astronomer, recorded in 1497, Continue reading

The Theory that Light has particles…

On December 4, 1900, Max Karl Ernst Ludwig Planck theorized that light radiates not as waves (as Isaac Newton claimed), but that light was made of particles or packets called quanta. Continue reading

Underwater Excavation of a Shipwreck

Some sponge divers in 1900 found a shipwreck off the island of Antikythera, Greece (thats near Crete) at a depth of about 170 feet (50-60 meters). Continue reading

Discovery of Antimatter

Physicist Carl David Anderson discovered antimatter in 1932 in a magnetic cloud chamber at the California Institute of Technology, Pasadena, CA, USA. Continue reading

Forestry Treatise

John Evelyn a member of the Royal Society produced the study for the commissioners of the British Navy entitled importance was Sylva, or a Discourse of Forest trees, and the Propagation of Timber in 1664. Continue reading

Magnetism Treatise

Magnetism treatise published Epistola Petri Peregrini de Maricourt ad Sygerum de Foucaucourt, militem, de magnete (Letter of Peter Peregrinus de Maricourt to Sygehus of Foucaucourt, Soldier, on the Magnet) in the mid-13th century. Continue reading

King David I Defined the Inch

Scotland's King David I defined one "ynche" is equal in width to the base of a man's thumbnail, Continue reading

First Achromatic Microscope

English optician Joseph Jackson Lister invented the Achromatic microscope in 1830. Continue reading

Ocean-Mapping Satellite Launched

The ocean-mapping satellite was Seasat 1, launched by the United States on June 26, 1978. Continue reading

Germans Discovered Continental Drift in 1912

Alfred Lothar Wegener, a German meteorologist, geophysicist, and Arctic explorer presented theoretical evidence of the continental drift in 1912. Continue reading