what is time ? In math, time can be defined as the ongoing and continuous sequence of events that occur in succession, from the past through the present to the future. Time is a used to quantify, measure or compare the duration of events or the intervals between them, and even, sequence events. What is the theory of time ? The B- theory of time is the name given to one of two positions regarding the temporal ordering of events in the philosophy of time . ... The B- theory is often drawn upon in theoretical physics, and is seen in theories such as eternalism. What is 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 (often denoted by the symbol. ) and, like length, mass, and charge, is usually described as a fundamental quantity. Is time the 4th dimension ? Lig...