The Origin and Principle of the Globe
The globe could be traced back to the ancient Greek period. The Alexandria port geologist Claudius Ptolemaeus (Ptolemy) designed the globe around 150 AD, but this was not the origin of the globe. Before that, people had a basic understanding and exploration of the Earth. The ancient globe was made based on astronomy and geography. It was used to display the basic shape and geographical outline of the Earth, as well as for astrology, religion, and mythology. The first globe of modern significance was invented in 1492 by the German navigator Beheim based on his navigation practice. The globe of the Middle Ages was mainly made in Europe, combining religion and secular regime to reflect the social and political situation at that time. The production materials were generally made of wood or stone, and the production process was rough but rich in content. From the end of the 15th century to the beginning of the 16th century, during the period of geographical discovery, the production of the globe was more accurate and the content was richer. The new discoveries of the explorers provided more information and data, and people had a deeper understanding of the shape and size of the Earth. During the scientific globe era from the end of the 18th century to the beginning of the 19th century, the globe was made using spherical geometry and surveying techniques. It was more precise and had more content. New technology was also introduced. After the 20th century, with the development of computers and digital technology, modern globe had made great breakthroughs in accuracy, content, interaction, and visualization. In terms of the principle of the globe, an ordinary globe rotated around the earth's axis. The two points where the earth's axis intersected with the ball were the poles. The upper pole was the North Pole, and the lower pole was the South Pole. The magnetic levitation globe made use of the magnetic effect of the current to make the globe float in the air. There was a magnet at the top of the globe, and there was a metal coil at the top of the circular plastic frame. The metal coil became an magnet through the current, and the attraction between the magnet and the magnet at the top of the globe could offset the gravity of the globe, thus making the globe float. The negative feedback mechanism could make the globe return to its original position after it deviated from the balance position. At the bottom of the globe, there were also magnets and Hall detectors to maintain balance. Gently rotating the globe would follow the principle of inertia (more specifically, the principle of conservation of momentum) and rotate at a fixed speed in a fixed direction.
A globe
Earth-shaped, extremely flat. The equator was long, more than 40,000. 510 million, surface area, 6371, average radius. Earth model globe, scaled down. The earth's axis was an imaginary axis that passed through the center of the earth and intersected two points: the North Pole pointed to Polaris, and the opposite point was called the South Pole. Weft circle, pointing east and west. The equator is long and has two poles. The equator is divided into north and south at zero degrees. South latitude S, north latitude N. Meridian, to the north and south. It's a semicircle, equal in length. Originally zero degrees, east and west are divided. West meridian W, east meridian E. The two opposite lines form a circle, and the degrees add up to 180. 20°W, 160°E, the hemisphere boundary must be remembered. Latitude Net, position.
A small globe
He wasn't too clear about the specific content of the question under the expression "small globe." If one wanted to learn about the globe, it was a model of the earth. People made it by shrinking the earth according to a certain proportion. It had the Earth's axis (the axis of the Earth's rotation, with the north end pointing near the Polaris), the poles (the two points where the Earth's axis intersected with the Earth's surface), the equator (a large circle with the same distance from the North and South Poles and the equator plane was vertical to the Earth's axis), the meridian (a semicircle that connected the North and South poles and was vertical to the latitude, with the same length, indicating the north-south direction), and the latitude (the equator and a circle parallel to the equator, forming a circle and parallel to each other, with different lengths, decreasing from the equator to the poles, indicating the east and west direction). There were also different types of globe, such as the globe with AR function, which allowed children to see the world's famous historical sites and various subject knowledge without leaving home. Some of the globe were sturdy and durable, marked in Chinese and English, printed clearly, and could be used as a night light at night. There was also the "reading machine of the globe world". When you click on the national flag with the reading pen, it will broadcast relevant national information. When you click on the reading pen alone, you can play haiku. There is a "test you mode" and so on. If there was a musical direction, there was also a single and song called "The Earth."
spinning globe
The globe could rotate around its axis. By rotating the globe, it could demonstrate the Earth's rotation deviation, the replacement of day and night, determine the local time and time, determine the relative position between two points on the Earth, measure the distance between two places on the surface, calculate the area of the area, and so on. Moreover, the rotating globe helped to visualize the various parts of the earth and facilitate the learning of geographical knowledge, such as the distribution of different countries and regions, the direction of latitude and longitude, and so on.
Price of the globe
There were many prices for a globe. There was a small globe priced as low as 1.71 yuan, a Beidou G2007 AR smart globe (20cm) priced at 24.75 yuan, a special-priced globe with AR function at 29.99 yuan, a Beidou 2065 CD ARJ D AR globe (20cm) priced at 59.9 yuan, and a slow-motion smart AR globe priced at 69 yuan. There was also a Beidou AR intelligent reading globe that cost 235.6 yuan. The wholesale price of the globe also varied.
Tiange globe
There were many size of the pigeon globe, such as 10.6cm, 14.2CM, 18.2cm, 20cm, 25cm, 32cm, etc. The material was commonly made of all-plastic, but some of them might have a mat film. There was a modern minimalist style. The production process included printing and so on. It could be used as a teaching instrument for teaching. For example, the 32cm pigeon globe could be used for early education, home and office. It could also be used as an ornament. For example, the 20cm fully plastic pigeon globe could be used as a light luxury home living room, study, office table ornament, and also as a business gift, advertising gift, promotional gift, and other gifts.
3DAR globe
The 3D AR globe was an innovative globe product. It broke through the traditional globe model and had the following characteristics: ** 1. Function and Specialties ** 1. ** Rich knowledge display ** - With the help of AR technology, various astronomical and geographical knowledge was displayed through 3D animation, just like the world encyclopedia knowledge base. The knowledge included, but was not limited to, astronomy, geography, weather structures, celebrities, animals, plants, scenic spots, and even ancient creatures such as dinosaurs. - For example, the 14 major topics of the Iswo Open intelligent point reading globe appeared at any time, from national scenery to extreme climate, from ancient dinosaurs to rare animals, from the vast universe to historical celebrities, famous schools, etc. Each theme was a real AR three-dimensional model, allowing children to experience the relevant scenes. 2. ** Multiple interaction experiences ** - Many 3D AR globes had an interaction function that allowed children to understand knowledge in three dimensions. For example, they could rotate the globe 360 degrees to view information from different areas. They could also rotate and enlarge the AR scene at will to interact with the things displayed, such as dinosaurs. - Some globes were equipped with exclusive applications. For example, the Iswo Open intelligent reading globe with exclusive applications could view AR animations of the solar system and the Earth's structure, clearly showing the deep structure of the Earth and the situation of the solar system. 3. ** Learning Support and Bilinguals ** - It was very helpful for children to learn geography and other knowledge. It was a very good teaching aid for geographical knowledge. Some even provided explanations in both Chinese and English, so that children could learn geography while learning foreign languages. 4. ** Night light function ** - Some 3D AR globe could be used as a small night light after being plugged in, which had a better atmosphere. For example, the Blue Planet globe was a gentle night light when turned on at night. ** 2. Instance of the product ** 1. **Funglobe Rolling Ball Touch Lamp AR globe ** - It was produced by a modern enterprise that specialized in producing terrestrial globe for 47 years. The brand had been awarded many honorary awards and cooperated with many brands offline. - The ball and base were separate and independent designs, light and convenient, and the ball was designed as a roly-doll. The surface of the sphere was double-sided printing. When the light was not on, the original appearance of the Earth could be seen. After the light was on, the administrative area, ocean currents, latitude and latitude lines, etc. could be seen intuitively. 2. ** Iswo's Unlock intelligent reading globe ** - It had six functions: a globe, reading, large model AI dialogue, walking encyclopedia, AR black technology, and real person explanation. - Gifted VR glasses in a box. Through the APP, you can experience the world in VR, such as the charm of landmark buildings in different cities, the structure of the earth, the solar system, and other content. There will also be interesting explanations in the VR experience to help the child build a systematic geographical awareness. 3. ** DIP ER Beidou intelligent point reading voice 3D AR globe ** - It could be used as a gift for Children's Day, birthday, school, etc. It had a certain educational enlightenment effect, but the price was relatively high. The promotional unit price was 559 yuan.
Blowing Principle
The principle of bleachings was to make objects lose their color through the oxidisation properties of bleaches. Different types of bleaches had different principles. The principle of the bleaching-powder was that the bleaching-powder would produce hypochloric acid when it came into contact with water. The hypochloric acid could catalyze the coloring matter, thus achieving the purpose of the bleaching-powder. The principle of hydrogen dioxide was that hydrogen dioxide was a strong oxidiser. It could destroy the " chromophore " inside the organic color substance and cause it to lose its original color. The principle of the absorption bleachings was that the substance had a large surface area, which could absorb the dye and make the substance fade. Other bleaches such as sulfur dioxide and ClO2 had similar principles. In general, bleaches change the color of objects or fade them through an oxidization reaction.
Reflex principle
The principle of reflexivity was proposed by Soros. This principle was based on a phenomenon that existed in human affairs: when someone was involved in something, the participant's view of the world was one-sided and distorted (fallibility principle), and these distorted views would in turn affect the things related to the point of view. From the perspective of the connection between the participant's thinking and the situation they participated in, it could be decomposed into a cognitive function and a participation function. In the cognitive function, the participant's cognition depends on the situation; in the participation function, the situation is affected by the participant's cognition. The interaction between the two is called reflexivity, which can be expressed as a pair of recursion functions: y = f(x), x = q(y). In the field of economics, traditional theories often avoided or denied reflexivity, and Soros believed that a fundamental factor in the existence of reflexivity was human cognitive bias. In addition, Kant believed that the application of moral laws in practice was based on the principle of reflexivity. This principle meant that every moral law must become a basic principle, and every rule must conform to the basic principles that any rational person could accept. In the moral theory he constructed, he emphasized human free will and free decision. This principle was widely used in modern philosophy and promoted the development and progress of human thinking. "Yun Anlu's Body Sacrifice" is equally exciting. Everyone is welcome to read it!
Principle Collapse
" Principle Collapse " mainly told the story of Ji Nan, Guan Yanbei, and they were the male and female protagonists of the novel. There were ups and downs in their relationship. They weren't always close and even fell into a cold war. However, after many stories, there was a sweet ending. The novel contained many chapters such as Chapter 1,"The Tiger is Poisonous to Eat Its Cub", Chapter 2,"The Great Beauty Is Bestowed", and so on. The last update was on October 30, 2024. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Principle of Musket
The musket was mainly composed of two parts, the musket tube and the musket holder. The principle was that through the slender barrel and smaller caliber, the gas pressure produced by the explosion of gunpowder in the barrel was greater, so that the projectile could obtain more energy. When making a musket, the making of the musket tube was the key. The craftsman would roll the fine iron into two iron tubes, one big and one small, and make them close together. Then, he would drill them into a musket tube with smooth inner walls and uniform thickness. When the musket was fired, the energy produced by the gunpowder explosion pushed the bullet out to achieve the purpose of shooting. Click on the link below to read the Musket Fire comic.