# Definition of time & its connection with movement of material. In physics we deal with material & without material time cannot be imagined [duplicate]

We get different definition of time? the indefinite continued progress of existence and events in the past, present, and future regarded as a whole. 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.

But in physics can we have a deep answer?

• "Time" is a human label. So are e.g. "force" and "length". They are not abstract mathematical constructs, as you imply. The number $e$ is an abstract mathematical construct. The definition of units of time using an atomic clock is what you would describe as universal constants - you should be happy with this. It is definitely not abstract mathematics - it's hard physical experiment. – StephenG Jan 29 '18 at 20:00