The heel cut.
A main bearing gives the crankshaft a smooth surface to spin on, and a rod bearing, provides a surface for the connecting rod to rotate on.
It is polarized at 90 degrees to the plane of incidence. If the surface is horizontal, the plane of incidence is vertical & the polarization would be horizontal.
Perpendicular
because the datum surface is perpendicular tothe direction of gravity at any point on it.but the horizontal surface is perpendicular to vertical at one point on it :D
A level is a tool that is placed on a solid surface. There is a string hanging on the level, and if it tilts, the surface isn't an even horizontal surface. If the string doesn't tilt, the surface is even.
A flat surface generally refers to a horizontal surface and is referred to as the plane.
A flat surface generally refers to a horizontal surface and is referred to as the plane.
horizontal.
level
Horizontal
A wall is an example of a surface standing at 90 degrees from the horizontal.
Within a context, the two may be different, yet the general descriptions are the same. A level surface is measurably level; a horizontal surface simply implies the relative situation for a surface.