Search Results: Sulfuric acid

Ancient Persian culture flourished between the reign of Cyrus II (The Great, r. c. 550-530 BCE), founder of the Achaemenid Persian Empire, and the fall of the Sassanian Empire in 651 CE. Even so, the foundations of Persian culture were already...

The Native Peoples of North America (also known as American Indians, Native Americans, Indigenous Americans, and First Americans) are the original inhabitants of North America believed to have migrated into the region between 40,000-14,000...

An empire is a political construct in which one state dominates over another state, or a series of states. At its heart, an empire is ruled by an emperor, even though many states in history without an emperor at their head are called "empires"...

Gold, chemical symbol Au (from the Latin aurum meaning 'shining dawn'), is a precious metal which has been used since antiquity in the production of jewellery, coinage, sculpture, vessels and as a decoration for buildings, monuments and statues...

The Lindow Man (officially Lindow III) is the top half of a male body, found preserved in a peat bog in Cheshire, England. The peat bogs at Lindow Moss date back to the last ice age and were formed by holes of melting ice; they are now...

Antonie van Leeuwenhoek (1632-1723) was the most important microscopist of the Scientific Revolution. The Dutchman made over 500 microscopes, many with a magnification far superior to contemporary models. His discoveries include bacteria...

Cochineal is a brilliant red dye extracted from the crushed bodies of parasitic insects which prey on cacti in the warmer parts of the Americas. The dye was an important part of trade in ancient Mesoamerica and South America and throughout...

Amber, the fossilised resin of trees, was used throughout the ancient world for jewellery and decorative objects. The main source was the Baltic region where amber, known to mineralogists as succinite, was washed up onto beaches and easily...

The Longmen Grottoes, a Buddhist cave complex located 13 kilometers south of Luoyang in China's Henan province, form some of the most significant and exquisite representations of ancient Chinese stone art. Created over the course of approximately...

The Native Peoples of North America raised cities, built roads, and developed highly sophisticated cultures which encouraged the invention of many items often taken for granted or whose origins are overlooked in the modern day, from aspirin...