Principal directions are directions in the pitch plane, and correspond to the principal cross sections of a tooth.
The axial direction is a direction parallel to an axis.
The transverse direction is a direction within a transverse plane.
The normal direction is a direction within a normal plane.
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Other articles related to "principal, principal directions, direction":
... At every point in a stressed body there are at least three planes, called principal planes, with normal vectors, called principal directions, where the ... parallel or in the same direction as the normal vector, and where there are no normal shear stresses ... The three stresses normal to these principal planes are called principal stresses ...
Famous quotes containing the words directions and/or principal:
“What do you think of us in fuzzy endeavor, you whose directions are sterling, whose lunge is straight?
Can you make a reason, how can you pardon us who memorize the rules and never score?”
—Gwendolyn Brooks (b. 1917)
“The principal rule of art is to please and to move. All the other rules were created to achieve this first one.”
—Jean Racine (16391699)