Explain the scientific origins of the principle of conservation of energy

It is subjectively proposed after the successive discovery of different forms of energy.

Summary. Hello, conservation of energy means that energy does not disappear or generate by itself, it is a change in the form of an object transmitted to another object, it is a concept in physics, and it is also a law in nature, and its scientific significance can make us think philosophically at a deep level, and then guide our real life. Generally speaking, the conservation of energy tells us to look at problems from the perspective of development, to exert subjective initiative, and to learn to cause qualitative change by quantitative change.

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Hello, conservation of energy means that energy will not disappear or produce itself, it is a change in the form of an object transmitted to another object, it is a concept of slippery in physics, and it is also a law in the hidden world of nature, and its scientific significance can make us think philosophically at a deep level, and then guide our real life. Generally speaking, the conservation of energy tells us to look at problems with the eyes of development, to give full play to our subjective initiative, and to learn to cause qualitative changes by quantitative changes.

The specific process by which scientists discovered the law of conservation of energy is as follows:

To know about the discovery process of conservation of energy, the first person we should know is Meyer. The German Hamburg doctor, known as the "madman", was named Meyer. He began to practice medicine independently in 1840.

In addition to asking why, he always observed, studied, and experimented with himself.

It was on February 22, 1840, that he had the privilege of coming to India with a fleet as a ship's doctor. One day, Meyer found out when he bled a crew member who was sick due to water and soil adaptation**. A needle in the patient's vein still flows bright red blood.

It's different from the black and red blood you see in Germany.

So, Meyer began to think: the reason why human blood is red is because it contains oxygen, which is burned in the human body to produce heat and maintain human body temperature. It's hot here, and you don't need to burn as much oxygen to maintain your body temperature, so the blood in your veins is still bright red.

So, where does the heat come from? The mass of the heart is not more than 500g, and its movement simply cannot produce so much heat, and it cannot maintain a person's body temperature by relying on Zhaosui alone.

The body temperature is maintained by the flesh and blood of the whole body, and this comes from the food that people eat, whether they eat meat or vegetables, they must come from plants, and plants grow by the light and heat of the sun. What about the sun's light and heat? If the sun is a piece of coal, then it can burn for 4,600 years, of course this is impossible, it must be something else, it is an unknown energy for us.

He boldly launched that the center of the sun was about 27.5 million degrees (now we know it to be 15 million degrees). The more Meyer thought about it, the more it boiled down to one thing: how energy is transformed

As soon as he returned to Hamburg, he wrote an essay "On the Forces of the Inorganic World" and measured the thermal work equivalent of 365 kilograms, meters and kilocalories by his own method. He submitted ** to the Annals of Physics, but it was not published, so it had to be published in a little-known medical journal.

He went around saying, "You see, the sun shines with light and heat, and the plants of the earth absorb them and give birth to chemical ......But even physicists could not believe him, and called him "crazy" with great disrespect, and finally even Meier's family suspected him of madness and invited a famous psychiatrist to his home to treat him.

Not only was he not understood academically, but he also experienced a series of life blows, such as the death of his young son and his younger brother's involvement in revolutionary activities, and in 1849, Meyer committed suicide by jumping from three floors, but the attempted search left his legs maimed and became crippled. He was then sent to the Gogentine Psychiatric Hospital, where he was subjected to inhuman torture for eight years.

In 1858, the world rediscovered Meyer, who was awarded an honorary doctorate by the Academy of Natural Sciences in Basel, Switzerland, after being released from the psychiatric hospital. In his later years, he was awarded the Copley Medal of the Royal Society, an honorary doctorate of philosophy from the University of Tübingen, and a member of the Bavarian and Italian Academies of Turing. On March 20, 1878, Meyer died in Helb.

The sum of the energies of all reactants is equal to the sum of the energies of all the products.

The specific applications of conservation of energy are as follows:

1. When the elevator descends, the energy of the elevator and its passengers is gradually converted from potential energy to kinetic energy, although in the whole process of the elevator descending, the form of energy is changing, the total energy of the elevator and passengers, that is, the sum of potential energy and kinetic energy is fixed, when the elevator descends, the speed and kinetic energy increase, and the potential energy decreases;

2. In electrochemistry, the electrical energy and chemical energy generated in the battery are converted into each other, and the total energy remains unchanged;

3. In biology, the total energy generated by human movement is converted into human internal energy, the ambient temperature to maintain cell homeostasis, and the heat energy released to the external environment.

There are many philosophical implications of the law of conservation of energy, and I will probably say a few that I don't know if anyone agrees with. 1.Energy is a kind of existence, but it cannot exist separately from matter.

2.Existence is the symmetry of energy in relation to time and space, but this symmetry can only be limited to a certain range. 3.

This existence has a source, and what is the conservation of energy without energy? "If the skin does not exist, the hair will be attached? ”。

4.If you look into the source, you will find that energy has a source, and this source is the principle of energy relativity. 5.

In a closed system, if all kinds of energy are converted to each other, and the conversion line is infinitely connected, you will find a closed ball of energy conversion, which does not have an external wire, and if there is an external wire, it means that the energy is not conserved. 6.This transition line must be continuous and uninterrupted, and if it is interrupted, it means that the energy is not conserved.

For example, when an object falls, the kinetic energy is converted by the gravitational potential energy, and the gravitational potential energy is converted by the gravitational potential energy, so what is the energy conversion of the gravitational potential energy? This is where the interruption of the connecting line occurs, which defines the scope of application of the law of conservation of mechanical energy, i.e., the law of conservation of mechanical energy can only be used in a single conserved force field, and if this boundary is crossed, the energy is not conserved.

7.The precondition for the law of conservation of energy is that the mass of matter in a conservative force field must be conserved first, and if the mass of matter in this conservative force field is not conserved, then the energy in the system cannot be conserved. For example:

After the matter in the "nothing" state breaks into the boundary of zero potential energy at the edge of the earth's gravitational field, the gravitational force is the process of coming into existence from nothing, and the potential energy of the object relative to the earth is also the process of coming from nothing, and then the energy in the entire earth system is not conserved, which is the energy in the earth system, called the principle of energy relativity. 8.The principle of energy relativity - the law of conservation of energy The dark energy of the universe.

9.Cosmic dark mass Cosmic dark energy c. 10.

The conservation of energy is an important factor in ensuring the stable existence of the planet, while the principle of energy relativity is the opposite, which is the existence that destroys this stability. For example, if a planet is regarded as a cup, if the internal energy of the two cups combined with its combination has a 1+1 3 relationship, if it is infinitely combined, this effect will break the planet, resulting in the planet's **, which is the universe, that is, the origin of the motion of cosmic objects, and the ultimate root of the motion will eventually be traced to the principle of energy relativity.

11.Force is the interaction between objects. From the definition of force, it can be seen that the interaction of forces is divided into three stages:

No interaction phase; interaction phase; Interaction equilibrium termination phase. The law of conservation of energy applies only to the second and third phases of the contradiction and not to the region between the first and second phases, which is the interval between the generation of energy and can only be explained by the principle of energy relativity. 12.

That is, the law of conservation of energy only applies to Newton's two. Three-law intervals, not for conversion intervals from one law to two laws. Let's talk about these points for the time being, anyway, the review can't be passed, and it's useless to talk too much.