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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.
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]
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 good news for the milkvetch plant is that they usually need wildfire to sprout — meaning dormant seeds now have a massive new habitat for a new crop of the rare shrub.
From electronics to medications, here's a list of things you shouldn't leave in your car as freezing temperatures blast most of the U.S.
WASHINGTON (Reuters) -China-based DJI and Autel Robotics could be banned from selling new drones in the United States market under an annual military bill set to be voted on later this week by the ...
Yes, I agree. FISH. Obsidian knapping is the most important knapping in the developed countries due to the high demand for scalpels made of obsidian, as they have thinner blades than steel.--67.71.18.40 23:31, 7 May 2007 (UTC) Technically speaking, those scalpels are not made from obsidian, as obsidian is volcanic glass.
President-elect Donald Trump laid a wreath at Arlington National Cemetery and then held a "Make America Great Again Victory Rally" in Washington on Sunday ahead of Monday's swearing-in ceremony.