Theater of Machines, Part 1

kind when the substance of the material of the one is heavier than that of the other, such as lead calculated against iron, and the like.

The XII. Definition.

Furthermore, a bodily thing is also estimated as lighter or heavier against another in its descension descent/downward movement, such that it descends through a straight line or a curve—that is, directly or bent—faster or slower, even if both such bodily things are in themselves (that is, simpliciter simply/by itself) of equal heaviness.

The XIII. Definition.

Two bodily things are also considered lighter or heavier against one another because of the place or position where they are found and rest, whereby they may obtain a heaviness or lightness, even if they are of equal heaviness for themselves or simpliciter simply/by itself against one another.

The XIV. Definition.

That we call a definite heaviness of a bodily thing, when we know how many pounds, ounces, or marks, and the like named weight the same holds.

The XV. Definition.

If the beam of the balance is directed equal to the ground line or the horizon, we call it an equal horizontal position, or that such a balance stands level.

The XVI. Definition.

The line that is drawn perpendicularly—that is, plumb-line straight downward—imagined in the mind through the point of the two pivots or the manner in which the balance hangs, is called the line of direction or equal alignment of the balance.

The XVII. Definition.

The descension descent of a heavy bodily thing that, in equal quantity, encompasses the least from the line of direction, or from the straight line that stretches directly against the centro center or middle point of the world, is called the worst descent.