"Section C"
(b)The fixed point of reference in polar coördinates. See
Coördinates. --
Center of curvature of a
curve (Geom.),
the center of that circle
which has at any given point of the curve closer contact with the
curve than has any other circle whatever. See Circle.--
Center of a fleet,
the division or
column between the van and rear, or between the weather division
and the lee. --
Center of gravity(Mech.),
that point of a body about which all its
parts can be balanced, or which being supported, the whole body
will remain at rest, though acted upon by gravity. --
Center of gyration (Mech.),
that
point in a rotating body at which the whole mass might be
concentrated (theoretically) without altering the resistance of
the intertia of the body to angular acceleration or
retardation. --
Center of inertia(Mech.),
the center of gravity of a body or system of
bodies. --
Center of motion,
the point
which remains at rest, while all the other parts of a body move
round it. --
Center of oscillation,
the point at which, if the whole matter of a suspended body
were collected, the time of oscillation would be the same as it
is in the actual form and state of the body.
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