3 ms·
Flint fractures conchoidally to produce edges as sharp as 30 angstroms - sharper than modern surgical steel which typically reaches only about 300-600 angstroms
by ethan_smith 1y ago
Flint fractures conchoidally to produce edges as sharp as 30 angstroms - sharper than modern surgical steel which typically reaches only about 300-600 angstroms.