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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.
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.
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 glass beads of Sub-Saharan Africa that were not melted from pre-existing glass material were instead formed by grinding glass into a fine powder to be worked further. Sources for such glass included scraps from broken glass bottles, cullets (recycled glass) or pre-existing glass beads which were no longer wanted.
English: Glass is broken with sound. Recorded using a high speed camera. Recorded using a high speed camera. Français : Cassage d'un verre à l'aide d' ondes sonores , enregistré avec une caméra haute vitesse.
The glass used typically starts out as 1-inch-wide (25 mm) strips of 1 ⁄ 4-inch-thick (6.4 mm) plate glass, which is cut into 1 inch (2.5 cm) squares. The glass square is then scored across the diagonal with a steel or tungsten carbide glass-cutting wheel to determine where the square will break, and pressure is then applied gradually across ...
A state of emergency has been declared in Southern California as fierce wildfires fueled by powerful Santa Ana winds continue to rage. Thousands of residents have been forced to evacuate their ...
In the video, Oakley, a German Shepherd who still looks very much like a puppy himself, is “teaching” his infant sister Junie how to climb a steep set of stairs at their house. Well, either ...