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Time is a concept that is well known to most of us, yet highly complex to define. Physics defines time as a basic physical quantity that can be measured using the unit termed as ‘second’.
Keeping it simple to understand, time is what ‘a clock measures’. We all know that clocks are designated in hours, minutes and seconds. Though, many scientific clocks and those used in research purposes measure far beyond to up to milliseconds or nanoseconds too, let us understand the concepts of time measurement in simple terms before exploring it further.
It has been an accepted standard that a ‘day’ is the time between the passage of Sun over a given imaginary line passing through the earth. This is normally 24 hours and is calculated as ‘One Solar Day’ or simply a ‘day’. So, 1 day = 24 hours
Now, what are these hours? When we say a day has 24 hours, it is implied that an hour is 1/24th of a day, isn’t it! Okay, a better explanation is here:
An ‘hour’ consists of ’60 minutes’. And what are these minutes? A minute is exactly ’60 seconds’. Now what is a ‘second’? It is the standard unit of measurement of time as per the SI system. SI system defines a ‘second’ "the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyper fine levels of the ground state of the cesium-133 atom" (at a temperature of 0 K).
|1 Day||24 Hours|
|1 Hour||60 Minutes|
|1 Minute||60 Seconds|
Imagine working with multiple days, hours, minutes and seconds?? That will be definitely take up lot of time, isn’t it? So by now you must have understood that working with time will take up your time! Fret not! You can easily add days, hours, minutes, and seconds using our calculator.
For this just enter the values of days, hours, minutes and seconds in the fields shown and click ‘Calculate’. You can get the answer instantaneously. It is as simple as that! Note that if you do not enter any value, it is taken as zero (0) by default.
Will time ever end?? Scientists differ in their ideas; some theoretical physicists say that in the next four billion years, time will end!! However, the theory of relativity says that universe will keep expanding infinitely. So, only time will say whether time will come to an end or not! What say??