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

Archeologist Discovered the First Weight Measure

British archeologist Flinders Petrie discovered the beqa, a cylindrical weight measure of 7 ounces (198 grams) at Naqada, Egypt dated to the Amratian period of 3800 BCE. Continue reading

Transmission Electron Microscope

Ernst August Friedrich Ruska, German physicist and electrical engineer developed a transmission electron microscope Continue reading

Galileo Galilei

Galileo Galilei (Italian: [ɡaliˈlɛːo ɡaliˈlɛi]; 15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, Continue reading

Galileo Invented the Thermometer

Galileo Galilei, Italian physicist and astronomer invented the thermometer in 1592. Continue reading

The First Recorded Standard Unit of Length

The first recorded unit of length was approximately 2.7 feet (0.8 meters) used by megalithic tomb builders of Europe around 3500 BCE Continue reading