Paper was invented by the ancient Chinese in the 2nd century BC during the Han Dynasty and spread slowly to the west via the Silk Road.
Gold is malleable, so it can be flattened into extremely thin sheets. One ounce of gold may be hammered thin enough to cover more than 9 square meters (96.9 square feet) of a surface. The gold leaf may be only 0.18 microns (seven millionths of an inch) thick; a stack
Egypt used boats with sails made of cotton as early as 3,000 BC, and in 1200 B.C. the Phoenicians and Greeks were the most seafaring people along the Mediterranean. They used large ships for cargo, and by 500 BC they had two masts with sails on their vessels. These ships
When you microwave a grape which are cut in two equal halves and leaving the two halves attached by a small flap of skin, a bright light and loud buzzing sound was observed at the junction between the grape halves, where they were connected by the flap of skin. Grapes
The safest car color was determined to be white. According to studies, white is considered the most visible color under almost all conditions except snow. Interestingly though, the color considered the most visible was lime yellow. Nevertheless, because of its lack of availability, and because most people have an aversion
In 2009, Mexican scientists discovered a method to produce tiny, nanometric sized synthetic diamonds from 80-proof (40% alcohol) tequila, which has the optimal range of water to ethanol for producing synthetic diamonds. This process involves heating the tequila to over 800 degrees C (1,400 degrees F) to break its molecular
Google began in January 1996 as a research project by Larry Page and Sergey Brin when they were both PhD students at Stanford University in Stanford, California. They originally nicknamed their new search engine “BackRub”, because the system checked backlinks to estimate the importance of a site. Eventually, they changed
Trains can’t stop quickly or swerve. The average freight train is about 1 to 1.25 miles in length (90 to 120 rail cars). When it’s moving at 55 miles an hour, it can take a mile or more to stop after the locomotive engineer fully applies the emergency brake. An