What is time? A simple definition!

Time is a measure of the duration of events, or the intervals between them, and is a fundamental part of the physical world.

In physics, time is considered to be a fundamental quantity, meaning that it cannot be defined in terms of other quantities. It is often referred to as the "fourth dimension," along with three dimensions of space.

Time is usually measured in units of seconds, minutes, hours, and days, and larger units such as years and centuries. It can be represented on a clock or other timekeeping device, which measures the passage of time through the regular and systematic movement of its hands or other indicators.

Time is closely related to the concept of causation, as events that happen at different times can be connected through a cause-and-effect relationship. It is also an important factor in the study of motion and change, as the rate at which objects or systems change can be measured in terms of time.

Time can be seen as a flowing stream, with the past behind us, the present in front of us, and the future ahead. However, the concept of time is still not fully understood and is the subject of ongoing study and debate in physics and philosophy.