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The analysis of obsidian debitage can reveal whether or not prismatic blade production occurred at a site and, if it had, what stages of production the process included. In other words, the types of manufacturing waste present (e.g., rejuvenation flakes and/or blades, platform rejuvenation flakes, etc.) at a site can inform archaeologists about ...
Obsidian was valued in Stone Age cultures because, like flint, it could be fractured to produce sharp blades or arrowheads in a process called knapping. Like all glass and some other naturally occurring rocks, obsidian breaks with a characteristic conchoidal fracture. It was also polished to create early mirrors.
The history of glassware dates back to the Phoenicians who fused obsidian together in campfires, making the first glassware.Glassware evolved as other ancient civilizations including the Syrians, Egyptians, and Romans refined the art of glassmaking.
Rock and dust samples retrieved by NASA from the asteroid Bennu exhibit some of the chemical building blocks of life, according to research that provides some of the best evidence to date that ...
Despite being sharper, prismatic obsidian is also considerably more brittle than steel; obsidian blades of the type used on the macuahuitl tended to shatter on impact with other obsidian blades, steel swords or plate armour. Obsidian blades also have difficulty penetrating European mail. The thin, replaceable blades used on the macuahuitl were ...
The simply 'nostalgic' sandwich that Harrison Ford used to always make for his son. Food. Delish. The 66 best winter soups to warm you up all season long. Lighter Side. Lighter Side. Parade.
In chemical separation terminology, the raffinate (from French raffiner, to refine) is a product which has had a component or components removed.The product having the removed materials is referred to as the extract.
"I had to train myself how to breathe. There were times I would pass out physically; I was unable to get back into the cockpit," Cruise says.