The HISTORY of WHY 1 MINUTE = 60 seconds

The number 60 is used to denote time, an hour 60 minutes, 60 seconds in a minute. The number 60 is first used by the Sumerians, so they're counting with base 60 or also known as Sexagesimal.

Reason why to use the number 60 is because this number is the smallest number that can be shared by six digits are: 1,2,3, 4 .5 .6.

So we can easily create: 1/2 hour = 30 min., 1/3 hours = 20 minutes, 1/4 hours = 15 minutes, etc. Imagine if one hour = 100 minutes, means 1/3 hours = 33,333 minutes? If people said, it's not sound.

If the word strings, 60 were highly composite number, a number, or the number dividers/factor much, IE 1,2,3, 4 .5 .6 .10, 12, 15,20,30,60.

Seconds

 

Minutes or seconds is a unit of time in the SI (international system, see SI units) which is defined as the duration of the period of time during the duration of radiation associated with the transition from two hyperfine levels of the ground state in a State of cesium-133 atom at a temperature of zero kelvins. In the most common usage, one second is 1/60 of a minute, and 1/3600 of one hour.

 Its history

 In the beginning, the second term in the language of the United Kingdom is known as a "second minute" (minutes), which means a small part of an hour. The first part is known as a "prime minute" (minutes of Prime) with the same minute as it is known now.

The magnitude of this Division are fixated on a 1/60, that is, there are 60 minutes in an hour and there are 60 seconds in one minute. This may be due to the influence of the Babylonian people, who use the count system based on sexagesimal (base 60).

The term clock itself already discovered by the people of Egypt in the round earth as 1/24 of the mean solar day. This makes the second as 1/of the mean solar day 86.400.

In 1956, the International Committee for Weights and Measures (CIPM), under the mandate given by the General Conference on Weights and Measures (CGPM) to ten in 1954, lays out the seconds in a period of rotation of the earth around the Sun at the moment of the epoch, because at the moment it has been realized that the Earth's rotation on its axis not uniform enough to be used as the standard time.

The Earth movement was described in Newcomb's Tables of the Sun (the Sun's list of Newcomb), which gives a formula for the motion of the Sun at the epoch 1900 based on astronomical observations made during the 18th century and the 19th.

Thus the second was defined as 1/31.556.925,9747 part of the solar year date 1900 January 0 at 12 time ephemeris. This definition was ratified by the General Conference on Weights and Measures to the eleven in 1960.

The reference to the year 1900 does not mean this is the epoch of the mean solar day 86.400 containing the seconds. But this is the epoch of the tropical year that contains 31.556.925,9747 seconds of Ephemeris Time.

Ephemeris time (Ephemeris Time-ET) has been defined as a measure of the time which gave the positions of celestial objects visible in accordance with Newton's theory of dynamic movement. With he atomic clock, then ditentukanlah the use of atomic clocks as the basis for the definition of the second, not to mention with a round earth.

From the results of several years of work, two astronomer at the United States Naval Observatory (USNO) and two and astronomer at the National Physical Laboratory (Teddington, England) determine the relationship of the hyperfine transition frequency of the atom cesium and the second of ephemeris.

By using a common-view measurement method based on the received signals from radio station WWV, they determined the orbital motion of the Moon that surrounding earth, the apparent movement of the Sun from which could be inferred, in the unit of time atomic clock. As a result, in 1967, the General Conference on Weights and Measures defined the second of atomic time in the International System of Units (SI) as

Throughout the duration of the period of duration of radiation in connection with the transition between two hyperfine levels of the ground state of the cesium-133 atom.

The ground state is defined at an absence (zero) magnetic field. The defined seconds is equal to the ephemeris second.  

Definition: next is perfected at the confluence of the BIPM to include sentences of this definition refers to a caesium atom at a temperature of 0 K silent. In practice, this means that the realization of high accuracy seconds with a need to compensate for the effects of radiation around it to try to expand the seconds like mentioned above.

Everyone should know the time, therefore let us learn the conversion or alteration of time here

1 second = Seper 60 minutes (1/60 sec)

1 Minute = 60 seconds

1 hour = 60 minutes

1 hour = 3600 Seconds

1 day = 24 hours

1 day = 1,440 Minutes

1 day = 86.400 Seconds

1 week = 7 days

1 month = 28 to 31 days

1 month = 4 weeks

1 Caturwulan = 4 months

1 Semester = 6 months

1 year = 365 To 366 days

1 year = 12 months

Decade = 10 years

1 Century = 100 years