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Time in physics
Time in physics
is defined by its
measurement
: time is what a
clock
reads. In classical, non-relativistic physics it is a
scalar
quantity and, like
length
,
mass
, and
charge
, is usually described as a
fundamental quantity
. Time can be combined mathematically with other
physical quantities
to
derive
other concepts such as
motion
,
kinetic energy
and time-dependent
fields
. is a complex of technological and scientific issues, and part of the foundation of
recordkeeping
.
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