Humans have been making fire using friction for thousands of years, with evidence of its use found in archaeological records across different cultures worldwide. Fire by friction is a testament to ...
In the marginalia of his copy of On War, influential fighter pilot-theorist John Boyd laments that Carl von Clausewitz never thought about inducing friction for the adversary: “Overcome friction, ...
1.1 What is friction? Take this everyday example: when a coffee mug rests on a flat table, the kinetic frictional force is zero. There is no force trying to move the mug across the table, so there is ...
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