Assertion: scalpel's blade | /r/HasProperty | smooth
Facets:
value: under a high magnification microscope
type: LOCATION
Source sentences:
text: Since obsidian will fracture down to a single atom, it is claimed to have a cutting edge five hundred times sharper than the sharpest steel blade, and under a high magnification microscope an obsidian blade still appears smooth, whereas a steel blade has a saw like edge.7 Jan 2014