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Because it is calculated from the angle of yellow and red, the time of the earth in a whole day is 23 hours is 59 minutes and 56 minutes, and it is carried to 60 for everyone's convenience. A leap year every four years is a day that brings together the four wonders of each day to form a day that disappears!
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In ancient China, time was calculated into 12 hours.
The ancients discovered the celestial phase.
Jupiter will appear in the same position for about 12 years.
The moon is full 12 times a year, full twice, and has 30 days.
The human hand has 10 fingers.
And 12 x 30 = 360 is about the number of days in a year, which is a multiple of 10.
So, set the number of degrees per week as: 12 x 30 = 360 degrees.
12 years occur in the same position, 360 12 = 30 (degrees of year) 30 degrees occupy 2 hours, equal to an hour. 12 hours are counted as a day.
After the 12 hours are subdivided, 24 units can also be used to represent day and night.
The full moon is once every 30 days, 24 represents one day later, and not 12 hours represents one.
Sky. That is, 60 days and nights. That's the base 60.
The above is a personal inference. Probably the most of the ancient people according to the solar terms, what.
After achieving the result of the best timing, the base system is always achieved.
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This is the culmination of tens of millions of years of human ingenuity.
It's not something you'll figure out in a moment. Hehe.
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This has something to do with the rotation and revolution of the earth where the earth is round, and it is also related to the fact that the clock is round, and the circumference is divided into 360 degrees. And these numbers have something to do with it, and if you want to change it to decimal, you are not used to it.
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Then you'll have to ask the person who invented the clock.
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In angles and latitudes and longitudes, degrees, minutes, and seconds also use the 60 base system.
The sexagesimal system is a base 60 base system.
The Indo-Arabic numerals we are accustomed to are a counting and calculus system based on 10.
For example, 2 in 234 represents 200, 25 in 2 represents 20, and 102 in 2 represents 2. In a complete base system, there must be a symbol for "zero" in order to zero in the number of digits that may be missing. Our straight addition, subtraction, multiplication and division is based on such a place-value system.
As for systems that do not use the base system, probably only Roman numerals are still familiar to the world. It's also a 10-based system, but it's represented by I, X, C, M, and 1000, supplemented by V, L, D, and 500. For example, 1762=mdcclxii.
The sexadecimal method used by Babylon is an incomplete base system because it lacks the symbol for "zero." But it is very close to our system, it uses 59 different symbols to represent 1 to 59, and when it appears from left to right on the clay tablet, it means =18363. This makes it easy to keep track of a very large number.
The Babylonian Sexagesim As mentioned earlier, it has always had no symbol for "zero" and no decimal point. Although sometimes they leave a certain digit blank to represent the missing term, because it is not uniformly used, it is impossible for us descendants to determine its value directly from the number symbol.
At this point, we can only judge from the context of the clay tablets. This confusion was not improved until about 300 BC when the Persians "invented" the symbol "zero", but the decimal point was never used.
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In addition to time, what are the other positions that use 60 levels in life, generally speaking, seconds, minutes, and hours are 60-base systems, and there is a more commonly used Jiazi, which is a 60-base position.
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There are very few in the 60 base system in life.
You can look at it in base 60.
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In addition to the use of the decimal system of time, in life, work and study, there are also angles, latitudes and longitudes, degrees, minutes and seconds also use the decimal system.
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It is used to calculate angles and geographical coordinates.
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Based on the existing learning knowledge, we can use it to calculate geographical coordinates, longitude, latitude.
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The sexagesimal system is a base 60 carry system, which originated in the ancient Semitic tribes in the 3rd century BC and later spread to Babylon, and is still used to record time, angles, and geographical coordinates. Other civilizations also use the hexadecimal system, such as the Ekagi in West New Guinea.
The number 60 has 12 factors, i.e., and 60, where and 5 are prime numbers. Because of the large number of factors, the number in sexagesimal is divisible by the majority of numbers; In other words, it can be broken down into different lengths of time, for example one hour can be seen as two 30 minutes, three 20 minutes, four 15 minutes, etc. 60 is also the smallest number that is divisible from 1 to 6 at the same time.
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Most of the decimal systems are decimal systems.
Or in the decimal system, why is the time in the base 60?
The earliest decimal system mastered by mankind is the decimal system, which is also the most widely used method. Length, weight, etc. are all wholeed.
10. Whole decimal system. So why is the decimal system of time not decimal and centimal but 60? For this problem, there are the following views.
1. Viewpoint 1; According to the heavenly stem and the earthly branch, 60 jiazi.
to divide the results.
Some believe that the decimal system of time is according to the I Ching.
It is divided by the relationship between the 60 jiazi of the heavenly stem and the earthly branch. This kind of 60 base system is a way of evolution and conversion according to the "Book of Changes" in the history of our country, also called the "Ganzhi Chronology Method", the so-called "Ganzhi Chronology" is a combination of 10 heavenly stems (A, B, C, D, , G, H, G, XIN, and 癸) and 12 earthly branches (Zi Chou Yin Mao Chen, Si Wu Wei Shen You, Hai); Jiazi, Yichou.
Ding Mao··· A total of 60 different stems. Many things of the ancients used this method of operation, but the root of it is still derived from the Book of Changes, which itself contains the methods of the ancients, so this view is not completely unreasonable.
2. Viewpoint 2; The origin of the base hexagram.
At least in 3000 BC, the Sumerians first adopted the base 60 system. Ancient Babylon.
People will carry forward the base 60 system. Until now, time, angle, latitude and longitude.
and so on, still using the base 60 method.
Because of the use of time, hours, minutes, and seconds are calculated according to the base of 60, which is actually inseparable from the ancient Babylonians. The earliest written records show that the Babylonians used a 60-school decimal system of mathematics based on 60. Using the sexagesimal system, the Babylonians represented 75 as "1,15," which is the same as we write 75 minutes as 1 hour and 15 minutes.
The ancient Babylonians believed that every day the sun walked, that is, degrees, and they combined the sixths of the circle together to calculate the hexadecimal system.
3. Viewpoint 3; The circumference is specified as the result of 360 degrees.
Hipparchus, a mathematician from Nicaea (present-day Turkey), was a great astronomer of his time. He founded based on Greek geometry.
Principles of astronomy. He divided the circle into 360 degrees, each divided into 60 parts, which served as the basis for trigonometry. Later, for the convenience of time, the decimal system was also used.
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From ancient times to the present, the timekeeping methods of the ancients are different, the time is 60, which is also a long-term survival of a timekeeping culture.
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This originated in Babylon, when people used the base 60 system, which has formed a fixed pattern, which is also easier to unify.
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The most auspicious numbers in the ancient Roman Empire were 6 and 0, and the time in the ancient Roman Empire was the base of 60.
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Many people believe that the reason why the decimal system is used to record time is mainly because of the ancient Romans, in the period of ancient Rome, the kings and people at that time believed that 6 and 0 were very auspicious numbers, so they decided to use the decimal system to record time, and later the ancient Romans transmitted their way of recording time to China, but this view is not too convincing.
There are also some historical records, in the ancient Bilong time, the mathematicians at that time invented the 60 base system of this mathematical model, and later they used this 60 exquisite way to record time, although this has historical records, but it does not fully prove that the 60 base system we use now to record time was used at that time.
There are also some people who believe that the decimal system we use to record time today is calculated according to the fact that the circle of pi is 360 degrees, and then divide each degree into 60 minutes, which happens to be similar to the base 60, so there are some people who think that time is deduced from the base 60 system according to this theory.
In some ancient books in our country, there is also a way to record this time, there is a clear provision, in the Book of Changes, the chronological method is actually the use of the base 60 system, so some people think that the time with the base 60 system, in fact, is used in accordance with the Year of the Book of Changes.
In fact, for the above methods, it is more reasonable, and it may be that different countries have invented the way to record time at that time, and then in the end, the unification has returned to the 60 base system. But if you use the decimal system, when calculating the time, there will be a lot of decimals, so it is difficult to calculate the time, and it is easy to make mistakes, and the decimal system is slightly worse than the base 60 system, so in the end it is the most appropriate way to record the time with the base 60, and it is easy to record, there is not too much difficulty, and there will not be many decimals.
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The first mathematicians in ancient Babylon invented the system of mathematics in the base 60 system. Their decimal calculation method is also very much in line with our modern time measurement standards. The second research is to divide the circle into 360 degrees, and then divide it into 60 minutes every 1 degree, which also coincides with the calculation method of the base 60 system.
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The decimal system of time is derived from the fact that the circle specified by pi is 360 degrees. The division of the circle into 360 degrees was the Turkish mathematician Hippezis, based on the principles of Greek geometry he founded in astronomy. The study of dividing a circle into 360 degrees, and then dividing it into 60 minutes every 1 degree, was developed as the basis for trigonometry.
For ease of use, time is also divided in the base of 60.
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Legend has it that the ancient Roman numerals 6 and 0 were very auspicious, so the ancient Romans used the base 60 system in time, and later spread to China, where they have been used until now.
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All should be derived from 1 year and 12 months, the law of the sun and the moon, is the basis for the ancients to observe and calibrate the time, the rise and fall of the sun 1 cycle is 1 day (12 hours in China) day and each is divided into 12 hours, 60 is 5 times that of 12, 1510, and even a circumference of 360 degrees is also like this
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Time has its own reason for using the base 60 system, not the base 100 system. The base 60 system has been handed down from ancient times in China according to the sexagenary branches.
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In honor of the sexagesimal system of Babylon.
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Hexadecimal is a representation of data in a computer.
It's not the same as the representation in our daily lives. It consists of 0-9, a-f, and the letters are not case sensitive. The correspondence with decimal is:
0-9 corresponds to 0-9; a-f corresponds to 10-15; Numbers in base can be represented by numbers of 0 (n-1) and letters a-f over 9.
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Sexagesim is a base 60 carry system, just like time.
60 seconds equals 1 minute.
60 minutes equals 1 hour.
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Why is time in 60 base instead of 100?
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Why is time in 60 base instead of 100?
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Viewpoint 1: The traditions of the ancient Roman Empire.
The most auspicious numbers in our country since ancient times are 5 and 9, while in the ancient Roman Empire it was 6 and 0. Therefore, a long time ago, the ancient Roman Empire time was the 60 base system, and then due to the cultural exchange between the merchants of the empire, it was adopted and is still used today.
Viewpoint 2: Babylonian application.
The earliest written records show that the Babylonians used a system of 60-based sagesim numerals. Using the sexagesimal system, the Babylonians represented 75 as "1,15," which is the same as we write 75 minutes as 1 hour and 15 minutes.
Around 2000 BC a 60-based place-based system appeared using only two wedge-shaped symbols. In this system, the cuneiform in the shape of "t" represents 1, and the cuneiform in the shape of " represents 10. This system of numbers was further extended to the representation of fractions in the sexagesimal system, but there was no sign for 0.
Nevertheless, it is very efficient for calculations. At the same time, it sets the standard for measuring time.
Viewpoint 3: The circumference is specified as a result of 360 degrees.
The mathematician Hipparchus (190 BC, 120 BC) from Nicaea (in present-day Turkey) is considered the greatest astronomer of his time. He founded astronomy, which was based on the principles of Greek geometry. He divided the circle into 360 degrees, each of which was subdivided into 60 minutes, which served as the basis for trigonometry.
For convenience, the time is also divided in the base 60 system.
Viewpoint 4: The result of the division of the heavenly stem and the earthly branch of 60 jiazi.
The decimal system of time is divided according to the relationship between the 60 jiazi of the heavenly stem and the earthly branch, and the ancients used this arithmetic relationship in many things, but it was originally the cause of the I Ching. Because the I Ching itself is a way of operation for the ancient people. The base 60 system is a great invention that human beings have explored in their existence.
The reason why the base 60 is used.
It has been speculated that 10 and 60 are less compatible, with 10 having only two divisors of 2 and 5, while 60 has 12 equal divisors.
In real life, it is not uncommon for a number to be divided into equal parts, as is the case with the 1 4 quarter, which is still widely used today. 4 is not divisible by 10, but divisible by 60, so decimal is easier to avoid complex calculations of decimal than decimal system.
The biggest reason to use the base 60 is that there are many more fractions to represent a decimal than the base of 10. In practice, dividing a certain interval into 10 equals will become, dividing them into 10 equal parts, and so on, the fraction will become a decimal. Unfortunately, the simplest 1 3 cannot be expressed as a decimal, because 3 is not a divisor of 10.
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