We all use the word “Time” every day and it is very familiar to everyone but what exactly it is?
Time is an indistinct property for all. It is very hard to define and understand what time is, as it has many definitions based on the field of use like science, philosophy, religion, and the arts. But in all these fields the measuring system is same. Time is substituted for duration. The unit of duration is the second thus making it the unit for time too.
What is much more thrilling about what physics educates about time is that neither time nor space have ever been specifically spoken to in any physics condition. They both have dependably been substituted for. Time is usually defined by its measurement: it is simply what a clock reads. It can be seen as a fourth dimension of reality that is used to describe events in three-dimensional space.
In the natural world, time has one direction, called the Arrow of time that seems to follow the laws of thermodynamics. According to the philosophy, “time is the progression of events from past to present into feature”. In classical, non-relativistic physics it is a scalar quantity.
Units of Time:
- Planck time unit
- Lunar month
- Quarter and season
- Common Year
- Tropical Year
- Gregorian year
- Sidereal year
- Leap year
- Galactic year
- Cosmological decade
- Day of Brahman
Did You Know?
- The time taken by the earth to complete one rotation about its own axis is called solar day
- Time is only fundamental physical quantity whose unit is same in all the measuring systems (C.G.S. F.P.S, and M.K.S)
- 1 second =1/86400th part of mean solar day