ABSOLUTE TIME Meaning and
Definition
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Absolute time is a concept in physics that refers to a universal and fixed measurement of time that is independent of any external factors or events. It asserts that time flows uniformly and constantly, independent of any changes or processes occurring in the physical world. Absolute time is often contrasted with relative time.
In classical physics, absolute time was long considered to be an inherent and unchanging characteristic of the universe. It was believed that time progressed at the same rate for all observers, regardless of their motion or location in space. This notion was famously put forth by Sir Isaac Newton in his theory of mechanics. According to Newton, time exists in a linear fashion and serves as a fundamental framework for measuring the duration of events.
However, with the advent of Albert Einstein's theory of relativity, the concept of absolute time was challenged. Einstein proposed that time is not an absolute entity, but rather a relative concept that is interconnected with space. According to his theory, the measurement of time can be influenced by factors such as motion and gravity, leading to relativistic effects.
While absolute time is still employed in certain contexts, such as in Newtonian physics and everyday vernacular, the understanding of time as a purely universal and fixed entity has been revised by the theory of relativity.
Etymology of ABSOLUTE TIME
The etymology of the word "absolute time" can be understood by breaking it down into its individual components.
"Absolute" comes from the Latin word "absolutus", which means "complete" or "unrestricted". It is derived from the verb "absolvere", meaning "to set free" or "to complete". The word "absolute" refers to something that is considered independent, not relative or dependent on other factors.
"Time" originates from the Old English word "tim", which is believed to have been influenced by the Old Norse word "timi". Both words meant "period" or "season". The Old English "tim" eventually became "time", referring to the continuous progression of events from the past through the present to the future.
When combined, "absolute time" refers to the concept of time seen as an unchanging and non-relative entity, unaffected by external factors such as motion or gravitational fields.
