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

National Weather Service Map

Joseph Henry, the first director of the Smithsonian Institution in Washington, DC, USA, founded the national weather service in 1848. Continue reading

Continental Crust Discovered in Australia

Roger Buick, geologist at the University of Sydney discovered a piece of continental crust, at Pilbara craton in northwestern Australia in 1995. Continue reading

Ramsay Discovered Periodic Table Elements

William Ramsay, a Scottish physical chemist discovered an entire grouping inert or noble gases elements in the periodic table. Continue reading

Chemist Teaching Lab Opens in Germany

The University of Giessen, Germany founded a chemist teaching laboratory in 1827. Continue reading

Dictionary of Chemistry Was Published

William Nicholson, English chemist and inventor completed the Dictionary of Chemistry in 1795, Continue reading

British Scientific Paper Used the Term Dinosaur

Proceedings of the British Association for the Advancement of Science, a scientific paper first used the scientific term dinosaur in 1841 Continue reading