The Damascus sword is the sharpest sword in the world. These swords were commonly used by Crusaders in the 17th century and contained carbon nanotubes.
According to legend, Damascus swords were sharp enough to slice a piece of silk in half and cut through rock, metal and other swords. The sharpness is due to the molecular structure, which scientists have studied to find that the softer steel blade is made of hard carbon nanotubes forming nanowires, which are extremely strong. Some of the nanowires are made of cementite, a resilient, iron-based mineral. Damascus swords are thought to be so strong because the hard nanowire layers are coupled with softer steel, called wootz, to create a strong, flexible blade.Learn More
Nebuchadnezzar was one of the greatest kings of ancient Babylon. Many historians of the ancient world have attributed the construction of the Hanging Gardens of Babylon to his rule. Additionally, Nebuchadnezzar occupies an important role in the biblical narrative, particularly in the Jewish scriptures.Full Answer >
Although much of the Apache lifestyle was centered around survival, there were a few games and pastimes they took part in. Games called "toe toss stick" and "foot toss ball" were played among both adults and children.Full Answer >
Ancient Sumerian pottery is clay crockery that was created by the inhabitants of Mesopotamia between 5000 and 2000 B.C. Among the most commonly produced products were plates, jugs and other kitchenware. The Sumerians are thought to have been the first culture to use a potter's wheel.Full Answer >
Neolithic art refers to any arts and crafts made by societies who abandoned the semi-nomadic lifestyle of the Paleolithic era in order to adopt farming and animal husbandry. The Neolithic life changed every aspect of human endeavor and experience, including art.Full Answer >