Sentences with phrase «before knapping»

«The most distinct of the many cultural innovations in the HP culture were the invention of the bow and arrow, different methods of heating raw materials (stone) before knapping to produce arrow heads, engraving ostrich eggshells with elaborate patterns, intensive use of hearths and relatively intense hunting and gathering practices,» says Professor Christopher Henshilwood, one of the team members from Wits and Bergen Universities.

Not exact matches

We know roughly when that change occurred from experiments in which researchers made their own versions of ancient stone tools using either their left or right hands to chip — or knap — the tool into shape, before comparing them with the tools made by early hominins.

Dr. Harmand, the lead author, says that the Lomekwi 3 artifacts show that at least one group of ancient hominin started intentionally «knapping» stones — breaking off pieces with quick, hard strikes from another stone — to make sharp tools long before previously thought.

Now, the Lomekwi artifacts show that those ideas are correct and at least one group of ancient hominin started intentionally knapping stones to make tools long before previously thought.

but before moving on to a new area to paint... with your paint brush... stroke the surface so the knap lays consistently and smoothly in the same direction.