principle and theory
Two Schools of Theory on the Principle of Airplanes Flying
The principle of the plane flying was mainly based on Bernoullian's principle. There were no two schools of thought. According to the Bernoullian principle, the greater the flow rate of a fluid (including air and water), the lower the pressure; the lower the flow rate, the greater the pressure. The shape of the wings of an aircraft was special. The upper surface was curved and the lower surface was relatively flat. When the airflow passed through the wings, the airflow on the upper surface had a high velocity and low pressure, while the airflow on the lower surface had a low velocity and high pressure. This produced an upward pressure difference, which was the lift force.
In order for the plane to fly, it also needed to solve the problem of forward movement. The forward movement relied on the power of the engine. For example, the engine drove the propeller to rotate to produce forward traction, or the jet produced forward thrust. During flight, the pitch, roll, and yawing movements were controlled by the elevator, aileron, and rudder respectively. For example, pitch was controlled by elevators, roll was controlled by ailerons, and yawing was controlled by rudders. The helicopter relied on the rotation of the propeller to stir the air to generate lift. When taking off, the speed of the propeller increased so that the lift was greater than the weight of the helicopter, and the height was adjusted by changing the speed of the propeller during flight.
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2026-02-11 04:32
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.
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2025-01-12 21:36
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.
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2026-06-27 01:59
The Principle of Economics
The microeconomics volume of Mankiw's Principles of Economics (8th edition) was accompanied by an English version of the Mindtap online learning platform, which included a wealth of learning resources such as interacting e-books.
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2026-06-29 10:23
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.
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2026-01-17 13:39
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.
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2026-01-20 14:31
The Principle of Love
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2026-02-18 13:56
Projection Principle
In the field of animation, the principle of projection was reflected to a certain extent. For example, in the "Full Time Expert" special chapter, holographic projection technology was used to restore the game's scenes. For example, God Ye Xiu's scenes in the All-Star Match and the exciting scene of the Dragon Raises Its Head were all created using holographic projection technology. Holographic projection used the principles of interference and refraction to display three-dimensional images. It was a way to display three-dimensional objects on a two-dimensional plane (such as a screen) through technical means. In a sense, this was also an application of projection principles in animation. In addition, Japan's virtual singer Hatsune Miku had used holographic projection technology to "break the dimensional wall" on the real stage many times. This also involved the visual presentation of virtual anime images projected into real space through the projection principle. At the same time, perspective and projection were essentially similar. Perspective was the image of a three-dimensional object projected on a two-dimensional plane (the middle plane), and projection was the image of a three-dimensional object projected on a two-dimensional plane (such as the ground or wall). They both relied on the straight line transmission of light. This principle might be reflected in the scene drawing and picture composition of animation, which helped to create visual effects such as a three-dimensional sense of space.
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2026-10-07 00:28
Force Principle
The Force was the core concept of the Star Wars movies. It was a mysterious energy field scattered in space, and its principle had not been clearly explained yet. The Force was divided into the Light Force and the Dark Force. Living beings could produce the Force, and talented people (such as Jedi Knights) could control and use the Force through practice. Both good and evil sides used the control of the Force to compete. The Force is omnipresent and has the energy to condense the entire galaxy. It is an energy field created by all living things. It is around us and seeps into our bodies, connecting all things in the universe, but there is no more information about the specific principles of its production and effect.
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2026-09-07 17:09
The Principle of Possession
In Taoist theory, possession referred to the soul of a person entering another person's body. There was a saying that the soul was immortal or the consciousness was not broken after death, and the body was only a mental shell. There was a situation similar to "reincarnation." When someone was resurrected after death, their personality and memories were completely transformed into another dead person. In the settings of online novels, there was such a principle in the possession flow: the equipment that the avatar entrusted only recognized the physical body and not the primordial spirit. A small person (Primordial Spirit Stage) could take the Rebirth Pill after entrusting the equipment, and then another small person would possess him and repeat the process of making 18 sets. After the possession, the lifespan would be reset. For example, the body of the big brother could be repeatedly possessed and attached with the advanced skills of various cultivation techniques. However, this was only a theory related to the creation of specific immortal cultivation simulations.
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2026-09-02 04:42
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