How to do the sun clock, how to do the sun clock

Here's how to make a sun clock:Prepare the materials: cardboard, planks, nails. 1. Draw a scale on the semi-circular cardboard.

2. Nail a large nail into the center of the plank, and engrave a scale on the edge of the round plank.

3. Insert the pointer into the clock face and land on the bracket at 40 degrees, then adjust the pointer and the clock face to 90 degrees.

4. A simple solar clock can be completed, and the time can be judged according to the projection of the circular cardboard.

Sundial tile (1), sundial needle (2), small steel ball (3).

Line ** word piece (13), support piece (14), tension screw (15), tension nut (16), brace rod (10) and chassis (9) composition, it is characterized in that: semi-cylindrical shape sundial tile (1) is installed on the arc-shaped supporting ring (4), supporting ring (4) is installed on supporting plate (7), they are fixed together with two cylindrical head screws (11) before and after, supporting plate (7) is inserted into the rectangular groove of the upper part of the support rod (10), and the screwing screw (8) is inserted into their matching hole as a rotating shaft, the strut (10) is fixed on the chassis (9), a steel wire sundial needle (2) is placed on the axial line of the sundial tile (1), the two ends of the sundial needle (2) are fixed in the inner hole of the tension screw (15) with a rope knot, and the tension screw (15) passes through the round hole of the upper end of the support piece (14), and is connected with its thread with the tension nut (16), thereby plays a tensioning effect on the sundial needle (2), and the other end of the support piece (14) is fixed on the sundial tile (1) with a cylindrical head screw (12), There is a small steel ball (3) on the sundial needle (2), the small steel ball (3) is located in the center of the circle of the spring equinox and autumnal equinox arc scale line of the line ** word piece (13), the line ** word piece (13) is pasted on the inner cylindrical surface of the sundial tile (1), the sundial tile (1) can be rotated in the A direction around its axis line on the supporting ring (4), that is, the sundial needle (2) is rotated and adjusted in the A direction, and is fixed with two adjusting screws (5) before and after, and the supporting plate (7) and the parts installed on it can be adjusted around the axis B for the rotation of the elevation angle, and is fixed with the tightening nut (6).

Take a stick, and a disc. Mark the north mark on the disk. Insert the stick vertically into the center of the disc and fix it. Then put it into the sun, and the mark of the north coincides with due north. Well, the sun clock is ready.

You're talking about the day track, it's very simple, just use a disc and stick on it.

Preparation of teaching aids: wooden boards, nails, colored pencils, glue.

Tintin is a brain-loving and hands-on child. One day, he ran home in high spirits and said to his grandmother, "Look, Grandma, I made the sun clock!"

I saw that Ding Ding was holding a round wooden board in his hand, with a large nail nailed in the center of the board, and many black dots were drawn on one side. Grandma asked, "How can you tell the time from your sun clock?"

"I put it under the sun, and when the sun moves in the sky, the shadow of the nail moves with it, and you can know the time by seeing which black spot the shadow moves to," Tintin said. ”

Use a disc with a stick in the middle.

Question 1: How to make a sun clock The world is full of love.

Love, everywhere. I saw one such thing in a newspaper.

There was a little boy who, on his way home, was happily crossing the road with his schoolbag on his back when a truck weighing about five tons sped away.

And when the driver found out, it was too late, and the truck pressed down on the little boy's feet and arms, "Ah......."After a scream, the driver stopped the command.

After getting out of the car, he rushed to burn.

Question 2: Write down the steps for making a sun clock Take a wooden stick and a disc. Mark the north mark on the disk.

Insert the stick vertically into the center of the disc and fix it. Then put it into the sun, and the mark of the north coincides with due north. Well, the sun clock is ready.

Question 3: How to use scientific props to use the sun clock Find a 15 cm square bakelite board, 1 cm thick, drill a hole with a Phillips screwdriver in the foundation on the middle edge, insert a short stick or straw, put it on the window sill or balcony, and mark the shadow of the stick at 10 o'clock, 11 o'clock, 12 o'clock, 1 o'clock and 2 o'clock at noon, and the solar clock will be ready.

Raw materials for making sun clocks: a piece of cardboard, a small wooden root, a compass, and a pencil.

Steps: 1. Draw a circle with a diameter of 20 cm on cardboard with a compass, and poke a small wooden stick in the center of the circle to fix it in the hole;

2. Choose a sunny day, put the finished things in the yard, and fix them;

4. Don't move the socks Qingyang clock, in sunny days, you can use the sun clock to time, according to the projection of the wooden stick, to see the accurate time.

In the history of the Chinese solar clock, the discovery of the pole watch or the pole hand can be traced back to the fourth century B.C., and the 12-hour system between the Zhou and Han dynasties was very advanced and had become an unenviable and changeable time system before the fourth century B.C. The equatorial sundial of the Tang Dynasty was the most accurate of all sundials. It was later introduced to the West by the Arachians or Jews, and in the seventeenth century the equatorial sundial became popular in Europe, and people called it the "bipartite sundial".

After the end of the Ming Dynasty, all kinds of Chinese and Western sundials were widely used in society, and the variety was unprecedented. Spanning thousands of years of human history, the solar clock has played a role in promoting the development of society and the progress of science and technology.

The Augustan Sun Clock is the largest solar clock in the world. This bell is particularly famous among ancient Roman artworks, and its components are a large flat piece of ground and a Chinese watch standing upright on the flat ground**. The flat ground is the clock face, which is engraved with the word that represents the hour, and the Huabiao is the pointer, which is more than 20 meters high, and there is a small pillar with a sharp round at the top to play the role of the pointer tip.

Different projections on the flat ground represent different hours of the day (95 meters on the summer solstice and 65 meters on the winter solstice). The clock is engraved with a Julian calendar and a number of proverbs of great significance.

It is reported that the bell was built in 9 B.C. by the order of Augustus, the adopted son of the ancient Roman Emperor Caesar, and the Peace Altar and the Mausoleum of Augustus were also built on both sides of it. These three works of art are integrated into one piece, symbolizing the sacrosanct majesty of the emperor.

Unfortunately, a flooding of the Tipa River washed away the clock, and the watch leaned to one side. Wind and rain gradually eroded the inscriptions on the clock dial. Although the later King Dojutian sent people to repair it, the Huabiao eventually collapsed, and the entire clock face was lost in the mud.

It was only in 1748 that the granite pillar was discovered. As for the clock face, archaeologists and astronomers have traveled all over the world to find this "stunner". In 1994, an archaeological team led by Edmund Buchner, director of the German Institute of Archaeology in Berlin, found it under a bar in the heart of the city of Rome, 200 meters from where the sun clock was located.

Sun Clock. In the long river of history, astronomy and chronology have developed together, it can be said that with astronomy, there is also timekeeping, and timekeeping instruments, like astronomical instruments, have gradually become precise after a long process of development. The oldest timekeeping instruments are the Tugui, the Gui Watch, and the Sundial, which are generally known as solar clocks based on the projection and orientation of the sun.

The rotation of the earth and its revolution around the sun make up the solar clock, which is ubiquitous--- and everyone on the earth can observe it and apply it anywhere; It is reliable --- it is not foreseeable that it will stop or "lose" time; It is very stable--- scientists can predict the hours, minutes, seconds, etc., of sunrise or sunset anywhere on the earth according to its time scale; Solar or lunar eclipses and other time-related events can also be seen hundreds or thousands of years earlier. In addition, it does not involve people's calculations--- there is no possibility of international debate about "whose sun is the most authoritative", and people do not have to bear any responsibility for its operation or regulation. However, this ancient and glorious "bell" also has serious flaws.

One of the facts is that the solar clock is not a very stable clock compared to the more sophisticated standard clock.

In the long river of history, astronomy and chronology have developed together, it can be said that with astronomy, there is also timekeeping, and timekeeping instruments, like astronomical instruments, have gradually become precise after a long process of development. The oldest timekeeping instruments are the Tugui, the Gui watch and the sundial, the principle of which is to keep time through the projection and orientation of the sun, commonly known as the corona, also known as the solar clock.

Take a wooden stick, put it on a round piece of paper**, and divide it into 12 parts with a protractor.

What are the principles of making a sun clock.

1. Prepare materials: disposable dinner plates, pencils, watercolor pens. As shown in the figure below:

2. Assemble to determine the position of the center of the disposable dinner plate and insert a pencil. As shown in the figure below:

3. Draw a marker, place the combination of dinner plate and pencil under the sun, and make a mark every hour. (Hold the position of this clock) as shown in the figure below:

4. Write the number and write the corresponding number on the marked plate. As shown in the figure below:

4. After digging the silver acacia, understand the relationship between reflection and time. As shown in the figure below, beat: