Thanks Curtis, that is “somewhat” clear. Can you tell me if this interpretation of mine is correct?
- Sharpness is simply the thickness of the edge, i.e. of the knife at the very top.
- Keenness is the thickness bottom of the apex. The apex (not defined there) is the triangle consisting of the edge as the top point and the two points where the sharpened sides of the knife transfer into the non-sharpened sides as the other two points.
And now we’re on the subject, what is the definition of a bevel?