The sharpest knives available are made of either steel or ceramic, both of which are human-made materials that must be forged in furnaces under extreme temperatures. Now, researchers have developed a potentially more sustainable way to make sharp knives: using hardened wood. The method makes wood 23 times harder and a knife made from the material is nearly three times sharper than a stainless-steel dinner table knife.
Researchers make hardened wooden knives that slice through steak
- ScienceDaily
- 20. 10 2021 (19:59)