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What Was the First Adhesive?
What Was the First Adhesive?
The earliest adhesive was tar, specifically birch tar, a sticky liquid created through dry distillation by controlled heating of the bark of a birch tree. New research indicates that the first users of tar were Neanderthals (Homo sapiens neanderthalensis), 200 thousand years ago. These Neanderthals used the tar to strengthen and waterproof the sinew, hide, or plant fiber bindings used to attach…
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Cut from 16ga. welding steel. Hafted to bamboo with a new wrapping technique I learned, back serving- not sure that's what it's called in this context, but that's all I know to call it from where I learned. Pity I can't very well use this on my targets without having to spend ten minutes digging it out. Also, in most states, barbed angles like these are illegal for hunting. I guess I'll just shoot it inti a tree and see what happens :-P
Stone-Tipped Spears Used Much Earlier Than Thought, Say Researchers
A University of Toronto-led team of anthropologists has found evidence that human ancestors used stone-tipped weapons for hunting 500,000 years ago - 200,000 years earlier than previously thought.
"This changes the way we think about early human adaptations and capacities before the origin of our own species," says Jayne Wilkins, a PhD candidate in the Department of Anthropology at the University of Toronto and lead author of a new study in Science. "Although both Neandertals and humans used stone-tipped spears, this is the first evidence that the technology originated prior to or near the divergence of these two species," says Wilkins.
Attaching stone points to spears – known as 'hafting' – was an important advance in hunting weaponry for early humans. Read more.
