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My methods are:
1. Be outside.
1. I fish a lot, so it's important to use the sun to estimate when I'll be home for dinner.
The specific method is: on weekdays, you should observe the approximate position of the sun rising in the latest stage, and everyone may know that the sun is above the head at about 12 noon, so that you divide the position of the sunrise and the position of the middle of the day into about 6 minutes, one is one hour, and the same is true in the afternoon period, which is very practical.
2. What should I do on a cloudy day? For example, birds chirp collectively in the morning to feed, the dew of the grass and trees is drying out about 8 to 9 o'clock, the collective chirping of the group is about 10 to 15 o'clock, the time when mosquitoes start to bite people is about 18 o'clock to about 5 o'clock the next day, and there are many other things you can summarize.
2. Indoors.
There are many ways to do it.
You can look at your mobile phone, TV, computer, or your family meal time, other people's time to get off work, old man and old lady to exercise, buy groceries, etc.
Nanxin Da Zhang Longhua!!
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1. Set the 1-hour reminder function on the mobile phone.
2. Computer time.
3. TV time.
Fourth, your own brain biological clock.
5. Hourglass. 6. Wipe all the wooden floors in the house.
7. From the beginning of cooking to the serving.
8. The distance the sun travels.
9. The long-distance bus travels 80 kilometers.
10. Read 4 full pages of Southern Weekly.
Ten. 1. Take a big walk around the residential area.
Ten. 2. It takes exactly one hour to walk home from the unit.
A baker's dozen..
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I played until I was tired for exactly an hour.
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Do what you love!!
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Put your phone on the ring, you don't have to look at it.
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You can look at the sun, the stupidest way is to ask someone, hehe...
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Use the counting method, counting 60 times is 1 minute, not too fast. View the original post
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To add a point, the method mentioned on the nth floor upstairs is only limited to the northern hemisphere, and the southern hemisphere is the north, and this method is useless on the equator, but on the equator, you can directly know the east and west according to the unknown sun.
As for looking at the time, you can stick a stick on the ground and look at the shadows, but it's not like a clock, you can know the approximate time as long as you train, and people who haven't trained float by
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The second and third floors are basically correct, the closer to the equator, the more accurate this method is, because its premise is that the maximum time of the noon sun height is 12 o'clock, like China's Liangguang area, this time is about 12 o'clock, and in areas like Xinjiang and Heilongjiang, this time is almost 1 o'clock, that is to say, the direction of the scale 1 and a half o'clock is due north.
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I would also like to know but the main thing is nothing more than the role of light.
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How did people in ancient times calculate time? Without watches, how did the ancients know the time?
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1. In ancient times, it was used to observe the shadow of the sun.
We often say "immediate shadow measurement", that is, put a pole on the ground and measure its shadow length at noon, so as to determine the direction, time, and solar terms.
Through the study of these lacquer rods, we find that the ancients were very clever and could have used these things to determine the solar terms about 4,000 years ago, and even influenced the formation of the state.
In addition to the measuring rod, the copper watch was also a common instrument for observing celestial phenomena in ancient times. At the Purple Mountain Observatory in Nanjing and the Ancient Observatory in Beijing, everyone can see the Tonggui watch.
Guo Shoujing of the Ming Dynasty built an eight-foot height watch in order to obtain a more accurate shadow length, and with the help of this longer and larger gauge watch, it was already possible to measure the shadow length very accurately.
2. Concrete transformation of time.
In addition to judging time by shadow length, the ancients would also think of various ways to keep time on the ground. For example, the large-scale astronomical instrument created by the Northern Song Dynasty astronomer Su Song and others - the water transport instrument elephant platform.
It is an armillary sphere for observing celestial phenomena, an armillary sphere for demonstrating celestial phenomena, a mechanical device for measuring time omissions, and a mechanism for reporting time, so that the ancients could leave time on the ground very precisely and communicate it to the public by telling the time.
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How did ancient people know the time at all times? They judge time by looking at the sun, and by looking at the shadow of the plant, the shadow.
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The ancients used twelve things to divide the day into twelve hours, each of which corresponds to two hours in modern times.
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In ancient times, every city had a bell tower and a drum tower, and the main role was to tell the time in peacetime, and the bell and drum should be struck every hour. You said that the beating is only at night, and the bell rings during the day.
Therefore, the ancients could not agree on the time as accurately as the modern people, so they could only roughly set a time and wait.
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In the Song Dynasty, there was a hydrological instrument, which was basically equivalent to the modern table clock.
At night, you can basically look at the moon and stars, and play more to be sure.
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When I was a child, I went to my grandmother's house, and she could see the sun and accurately tell the approximate time, with an error of no more than 15 minutes.
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In ancient times, people had an instrument for measuring time, called a leak, and they knew the time by looking at the dripping situation.
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Look at the sun and listen to the roosters. Lighting incense counts the time. The time is calculated by the method of dripping water in a copper kettle, and there are sundials, ancient clocks.
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Look at the sun during the day and the moon at night!!
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Learn how to know the time when the rooster crows.
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hours, closer to the written statement;
Quantitatively, an hour is an hour.
An hour is an hour.
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That's right, an hour is an hour is an ancient method of timekeeping, so it's an hour. If you write, you can write for an hour, which is equal to, an hour. That's it, I tried. That's right.
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An hour is a colloquial saying, which means an hour.
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One hour is an hour in Shaanxi dialect, so an hour is an hour.
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An hour is an hour, and the minute hand goes around in one circle.
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Yes, but troublesome, you should look at the hour hand between 4 and 5 is 1,000 points, and then look at the minute hand at 8 is 8 minutes, so 4:08 minutes.
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I always read the hour hand first, then the minute hand. It's a little hard for you to look at it that way.
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Looking at the time of the copy clock from the mirror can grasp the following two principles:
1. Principle of specular reflection 1: The light from the left is reflected to the right, and the clock observed from the mirror is in opposite tunes with the left and right of the same object in reality.
2. Principle of specular reflection 2: The light from the left is reflected to the right, and the clock observed from the mirror is unchanged from the up and down of the same object in reality.
According to the above principle, the positions of 12 and 6 are unchanged, then the opposite of clock 1 is 11, the opposite of clock 2 is 10, the opposite of clock 3 is 9, the opposite of clock 4 is 8, and the opposite of clock 5 is 7.
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It's a trouble for you, my neighbors are in the beginning of being at home.
I would force myself to be calm by shopping for things, because when I was not calm, I would buy back all the things I usually wanted to buy, but I was reluctant to buy, and then I would become very calm and very happy.
When I was a child, I didn't dare to tell my parents if I lost money, but the money was used to pay for tuition, because I didn't dare to tell my parents that I lost it, and the school didn't pay the money, the teacher called ** to my parents, and they went to ask me, I still admitted it at first, but they said that the school called **, and I admitted it.
There are many rare diseases, such as vampire disease, rubber disease, werewolf disease, immortality, and walking dead disease, these names sound ridiculous, but they are actually real diseases.
There are goofs not only in our domestic TV series, but also in foreign blockbusters, such as "Pirates of the Caribbean", hehe, this hat is not fashionable.
When I found out that he was a little empathetic, I said to him, in fact, love is like a pair of socks, the more you look at the socks that are not pleasing to the eye, the more likely you are to be by your side forever, and the more you like the beautiful socks, there will often be one less.