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Knapping is the shaping of flint, chert, obsidian, or other conchoidal fracturing stone through the process of lithic reduction to manufacture stone tools, strikers for flintlock firearms, or to produce flat-faced stones for building or facing walls, and flushwork decoration.
Errett Callahan was born in Lynchburg, Virginia, on December 17, 1937.Callahan’s interest in the outdoors and Native American lifeways began quite early on. As a boy Callahan was a member of the Boy Scouts of America and it was as a Boy Scout that he was first exposed to the skills and techniques that the Native Americans used to survive in the outdoors. [1]
The Levallois technique of flint-knapping. In archaeology, in particular of the Stone Age, lithic reduction is the process of fashioning stones or rocks from their natural state into tools or weapons by removing some parts.
The Summary. A new report shows that cancer cases are shifting from men to women in the United States and from older to younger adults. For the first time, cancer rates in women ages 50 to 64 have ...
A Hertzian cone is the cone produced when an object passes through a solid, such as a bullet through glass. More technically, it is a cone of force that propagates through a brittle, amorphous, or cryptocrystalline solid material from a point of impact. This force eventually removes a full or partial cone in the material. [1]
According to the New York Times, here's exactly how to play Strands: Find theme words to fill the board. Theme words stay highlighted in blue when found.
ROCKFORD, Ill. (WTVO) – It’s been 34 years since Macaulay Culkin’s character, Kevin McCallister, made a trip to the supermarket for supplies in the 1990 Chris Columbus film “Home Alone ...
A glass knife is a knife with a blade made of glass, with a fracture line forming an extremely sharp cutting edge. Glass knives were used in antiquity due to their natural sharpness and the ease with which they could be manufactured. In modern electron microscopy glass knives are used to make the ultrathin sections needed for imaging.
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