What should the correct earth script look like?

Writing is the writing symbol of language, and its function is to transmit ideological information, so the correct text is not phonetic, but ideological, and the use of correct words to teach the flow of thought will not be limited by the difference in language, even the extraterrestrial wisdom will be easily deciphered. The correct earth script is the correct shape and image.

There is nothing specifically about what the earth script should look like. It's man-made. The same is true of words.

In the words of Mr. Lu Xun: There is no road in the world, but when there are many people walking, there will be a road. There would have been no writing on Earth.

Everybody uses words. Hence the words.

This question reminds me of the chicken or the egg. Whatever you say, it makes sense, it depends on your beliefs.

I feel that the symbols that can clearly express people's thoughts and feelings and have achieved the purpose of communicating with each other are the correct earth characters. Computer language, machine language and other languages that are not used to communicate between people can only be regarded as professional tools, not earth script.

**"Words, that is, all human beings can understand.

The whole world can understand it.

There are several categories, but they are all just symbols.

The earth is round, and so are the other planets. The water droplets we see are also round in the air. The bubbles are also round.

Due to the surface tension of the liquid, the bubbles and small water droplets are round.

Why the earth is round begins with the birth of the earth. The original universe was a high-temperature, high-energy, high-density substance, and due to its large **, various planets were produced. At that moment, those planets were all hot and liquid, and also due to the action of surface tension, they were all round.

After hundreds of billions of years of cooling, the temperature on the surface of some planets gradually decreased, and then proteins were slowly produced, and life was born, and this planet is the Earth. In the various movements that followed, there was no reason to change it to other shapes, so it has always been in the circle until now.

But the Earth is not a standard sphere. The Earth is an irregular spheroid with slightly flattened poles. Earth's equatorial radius (a) 6378 140 km Earth's polar radius (b) 6356 755 km, Earth's average radius r(3 a2b) km

From these data, we can see that the Earth's equatorial radius is large, why? That's because the centrifugal action in the middle part of the Earth's rotation around the Earth's axis is large, which makes the radius in the middle, that is, near the equator, larger.

In addition, the continuous changes in the earth's crust form the causes of mountains and oceans on the earth's surface, as well as **, volcanoes, etc., which will cause differences in the earth's surface.

The earth is an irregular sphere with slightly flattened poles and slightly bulging equators, not a normal sphere, with an average radius of 6,371 kilometers, a polar radius of kilometers, a maximum circumference of about 40,000 square kilometers, and an area of about 100 million square kilometers.

Earth is the third planet in the old solar system from the inside to the outside, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, about 100 million kilometers (1 astronomical unit) from the sun. The interior of the earth is divided into the core, mantle, and crustal structure, and the surface of the earth has a hydrosphere, atmosphere, and magnetic field.

The Earth is not a perfectly circular sphere, but a rotating sphere with slightly flattened poles and a convex equator.

The so-called spheroid is formed by the rotation of a warp coil around the earth's axis. All the warp coils are equal ellipses, while the equator and all the weft coils are perfect circles. In order to process the results of geodetic surveys, a spheroid that is close to the size and shape of the earth is used and its relationship with the origin of the earth is determined, which is called a reference ellipsoid.

In the nineteenth century, through precise gravitational and geodetic surveys, it was further discovered that the equator is not a perfect circle, but an ellipse, and the length of the diameter is also different. In this way, there are three axes of unequal length from the center of the earth to the surface of the earth, so the shape of the earth is represented by a triaxial spheroid in surveying.

Since then, it has been found that the north and south hemispheres of the earth are asymmetrical, the south pole is closer to the center of the earth than the north pole, and the north pole protrudes by meters, and the south pole recesses meters; It is also concave at latitude 45 north and uplifted at latitude 45 south. This shape is compared to the reference ellipsoid, and the earth is a bit like a pear, so the name "pear-shaped earth" appears in surveying. In short, the shape of the earth is very irregular and cannot be represented by simple geometric shapes.

More precisely, the Earth has a unique terrestrial shape.

Human understanding of the shape of the earth has gradually improved with the development of science and technology. Circular spheres, spheroids, triaxial spheroids, and earth shapes can be said to be approximate to the true shape of the earth. In turn, the shape of the earth needs to be simplified to varying degrees in the struggle for production and in scientific practice.

For example, when making a globe or making a global map, the earth must be seen as a sphere; When surveying large-scale topographic maps, the Earth must be treated as a regular reference ellipsoid; When launching an artificial object and calculating its orbit, it is necessary to calculate the flattening of the equator and the deviation of the reference ellipsoid from each place more accurately.

Therefore, the shape of the earth cannot be represented by a certain geometric shape, and it should be called strictly an earth shape.

Scientists have boldly speculated that the earth is likely to be a cell in the body of an organism.

A moving ellipsoid. The radius of the equator is longer, in kilometers, and the radius of the poles is shorter, in kilometers. Because of the size of the planet, this difference is insignificant.

The inertial centrifugal force generated by the rotation of the earth causes the earth to gradually expand from the equator to the poles, becoming the shape of the current slightly flattened spheroid. The semi-major axis of this spheroid, i.e., the radius of the Earth's equator, is kilometers, and the semi-minor axis, i.e., the radius of the poles of the Earth, is kilometers, and the flattening rate is about 1 298.

In recent years, according to the results of artificial earth satellite observations, the equator resembles an ellipse, not a perfect circle, so the shape of the earth can also be considered a "triaxial ellipsoid". However, these differences are very small compared with the average radius of the earth, so from the perspective of space, the earth can still be regarded as a sphere The earth is not absolutely round, at the end of the 17th century, the British scientist Newton studied the influence of the earth's rotation on the shape of the earth, and theoretically speculated that the earth is not a very round sphere, but an ellipsoid with a slight uplift at the equator, and the poles are slightly flattened, and the equatorial radius is more than 20 kilometers longer than the polar radius. 1735 In 1744, the Paris Academy of Sciences sent two survey teams to northern Europe and South America to measure radians, and the results confirmed that the earth was indeed an ellipsoid.

If you look at it from a distance, you will see that the earth is shaped like a pear: its equatorial part is bulging, and it is its "pear body"; The North Pole is a bit pointed, like a "pear"; The South Pole is a bit concave, like a "pear navel", and the whole earth is like a pear-shaped rotating body, so people call it "pear-shaped earth".

In fact, the Earth is a triaxial ellipsoid, to be exact.

The Earth is elliptical.

The Earth was created long ago when rocks in the solar system collided with each other to form planets. From the beginning of its formation until the present, the earth has been mainly composed of liquid rocks. In space, where gravity is minimal, liquid matter will automatically form a spherical shape.

This has been demonstrated by experiments conducted by astronauts in the space environment with substances such as water, fruit juice and liquid metal. The Earth is a huge liquid sphere at a considerable distance from the Sun, which gradually forms a circle as it moves through space. Asteroids and small stars such as the moons of Mars are so weak in their gravitational pull that they cannot form a circle once they form a solid star.

Due to the large size of the Earth, its gravitational pull is strong enough to make itself circular. If there is no tectonic plate movement that makes the peaks taller, gravity will make the Earth become more and more round.

When the universe was formed. Many heavy metals are concentrated. And the core of the earth was formed. In turn, it attracts non-heavy metal substances such as dust.

But what is an elliptical shape in the earth is related to the characteristics of the circle and its rotation.

When the core of the earth reaches a certain weight. The gravitational pull will cause the external force to carve. Because of the depression. Approaching the center of a metal with a heavier mass.

And the gravitational pull at the bulge. Because there is the thickness of the earth's crust. Whereas, the gravitational pull is weaker. (Lower depressions under gravity.) Can't attract magma).

And because the metal materials in the center of the earth almost always emit nuclear energy in the early stage. The enormous heat turns the earth into a liquid state. This force is even stronger.

This causes the magma to fill in from the bulge to the recess. It also makes the crust at about the same distance from the center of the earth everywhere. (The distance from any point on the surface of the circle to the center of the circle.)

same) and when the Earth has a centroid. It already rotates. The centrifugal force causes the Earth's equator to be slightly thicker than the meridian circle. That is, to make the earth incomplete and circular. Rather, it is an ellipse.

The Earth is an oblate sphere with a convex equator and concave poles.

Quality. Cavendish argues that the mass of the Earth is about kilograms, the equatorial radius of the Earth Ra=6378137m 6378km, the polar radius Rb=6356752m 6357km, and the flattening rate E=1, ignoring the Earth's non-spherical symmetry, the average radius R=6371km. The value of gravitational acceleration at a certain sea level at the equator is ga=, the value of gravitational acceleration at a certain sea level in the North Pole is gb=, the global standard value of gravitational acceleration is g=, and the earth's rotation period is 23 hours, 56 minutes and 4 seconds (sidereal days), that is, t=.

If the mass of the Earth is considered homogeneous, and the influence of other celestial bodies is ignored, the mass of the Earth can be calculated in the following way. Method.

1. At the equator, the gravitational pull of the Earth on an object with mass m is equal to the sum of the gravitational force of the object and the centripetal force that rotates with the Earth.

2. In the North Pole, the rotation of the earth is not taken into account, and it is calculated as a method.

3. Treat the earth as a sphere with uniform mass, ignore the influence of rotation, take the average of the radius, and take the standard value of gravitational acceleration. It was the first image of Earth taken by astronauts in space in 1959.

The distance between the Moon and the Earth is r from the Moon to the Earth=, the lunar orbit period is 27 days, 7 hours, 43 minutes and 11 seconds (sidereal day), that is, T month, the Moon and the Earth are both regarded as mass points, and the mass of the Moon is m months. Method.

Fourth, for the temperature. The temperature of the Earth's core is about 6880, which is higher than the surface temperature of the solar photosphere (6000). The highest temperature on Earth occurs in the hydrogen bomb**.

It can reach 100000000 at a time, which is 16,667 times the temperature of the sun's surface and much higher than the temperature of the sun's core (14 million degrees Celsius). Where is the coldest place on earth? The "cold pole" of the Northern Hemisphere was in Oymyakon in eastern Siberia, with a minimum temperature of 71 in January 1961.

The "cold pole" of the Southern Hemisphere is on the Antarctic continent, and the temperature on August 24, 1960 was .

Electrical. Negatively charged Cause: The earth rotates from west to east, and the geomagnetic field is directed from the magnetic south pole to the magnetic north pole (that is, the north pole points to the south pole), and the toroidal current formed is opposite to the direction of the earth's rotation, so it is negatively charged.

Shape. After long-term and precise measurements, scientists have found that the earth is not a regular sphere, but an irregular sphere with slightly flattened poles and a slightly bulging equator. The Earth's equatorial radius is about long, which is so small compared to the average radius of the Earth that it can still be regarded as a regular sphere when viewed from the perspective of space.

If a globe with a radius of 1 meter is made according to this scale, the equatorial radius is only about 3 mm longer than the polar radius, which is difficult to detect with the human eye, so it is always made into a regular sphere when making a globe.

Natural disaster. ** Landslides, Typhoons, Tsunami, Hail, Drought, Hurricanes, Floods, Cold Waves, Snow Disasters, Acid Rain.

Natural disasters (20 photos) Dust storms Desertification Storm surge Tornadoes Mudslides Soil erosion Volcanic eruptions Biological disasters Avalanches Storms Missing biological chains ......

It is round, with water, earth, animals, and plants.

It is a vast blue planet, he is the most beautiful of all the planets in the solar system, in its arms, there is a very beautiful world of flowers, human beings and all animals and plants are depicting this beautiful planet.

The basketball, squeezed and formed, is like the earth.