Comments on: Obsidian Knives Sharper Than Surgical Scalpels.

By: Daniel Kim

Daniel Kim — Sun, 17 Jun 2007 09:51:43 +0000

People who prepare samples for electron microscopes will use glass “knives” to cut ultra-thin tissue samples. The clean cut edge of broken glass lets them make a very thin, smooth slice of their sample.

By: Chris

Chris — Sun, 17 Jun 2007 03:26:02 +0000

now they’re going to prevent carrying stones in the plane, in case you begin to chip them caveman style.

By: Carl Huber

Carl Huber — Sat, 16 Jun 2007 20:53:59 +0000

The character Raven in Neal Stephenson’s novel Snow Crash uses a glass knife for this very same reason. Not the faster healing time, of course, but because it can cut through “cut proof” material that stops metal blades. Additionally, it can’t be sensed by metal detectors. Good stuff. Fascinating.

By: C Note

C Note — Sat, 16 Jun 2007 19:52:53 +0000

Obsidian scalpels are actually available.