What exactly is an "electric charge"?

True to our original purpose, we have been studying electronic information for a long time, and we seem to have forgotten why we set out. Forgetting the electron itself, forgetting the basic movement of electrons, we all yearn for programming, artificial intelligence, radar, big data and 5G, 6G, etc., but we have long forgotten what the most basic electronic motion state is? But remember, this is all based on the movement of electrons.

When we were in elementary school, we knew the terms static electricity, positive electricity and negative electricity; In junior high school, we learned the basic circuit components and circuit diagrams (electrical diagrams), as well as Ohm's law and so on; In high school, we learned Faraday's law of electromagnetic induction, Lenz's Law, and Ampere's rule. In college, we learned basic theories such as Maxwell's equations and Kirchhoff's law.

All this way, what are we learning, who are we talking to, who are we going to know, who are we going to understand? And who will serve the world. We forget that our teachers didn't say it, maybe they did, but didn't have a deep understanding of what electrons are. Those of us who have come along the way or are moving forward, please don't forget, what is the object of your study? What are the things you have to do? How are you going to do it?

In order not to forget the original heart, all this, we must start from the charge of this thing!

To answer what is an electric charge is like answering why is there gravity between matter?

These questions are too fundamental, the current science has not been able to answer, many of the laws of physics are still only phenomenal, for example, the law of gravitation, Coulomb's law, the speed of light is unchanged, these are just experimental results, just like the apple hit the Newton first found a phenomenon.

Why this is, however, we do not yet know. This may be the reason why many students are confused, and it is also the fundamental reason why teachers do not understand. The reason why many people misunderstand "charge is a particle" or "how charge behaves as a property" is that most books only introduce electric fields, electric potentials, Coulomb's law, Gauss's law... It neglected to introduce the most basic concept of electric charge.

If one day in the future we know the nature of electric charge and gravitation, then our physical edifice should be complete. But in spite of this, in order to be worthy of their own learning of more than ten years of electrons, I still have to try to understand, to explain, what is the nature of charge?

The answer is: do not know, really do not know, the scientific community has not given the most reasonable explanation, heaven has no eyes. People are still a long way from understanding the nature of electric charge, but this does not affect or conflict with the later theory of electronics. It is because many of our theories are theories derived from experimental phenomena that it is difficult to understand the essence of the problem, which involves the knowledge of quantum field theory.

But there are ways to compare what an electric charge is. Charged particles are often referred to as electric charges, but the charge itself is not a particle, just for the sake of description, it can be thought of as a particle. With these few sentences to describe what is electric charge should not be difficult to understand. This means that the charge moves with the charged particles, like if you move from Beijing to Shanghai, it doesn't matter if you drive there, take the high-speed train, or fly there. So if you think of charge as a property like energy, mass, and heat, then it's easy to understand what it is and build the whole theory of electronics, and understand what charge is.

Here's the official definition:

Charge: is a physical property of matter (is a property), and cannot exist alone. So the charge is not a particle. Normally, electrons have a negative charge, protons have a positive charge, and antielectrons and antiprotons have the opposite charge. We call this an elementary charge or a primary charge. The basic charge e=1.6×10-19 coulombs, and the charge of any charged body except quarks is an integral multiple of or equal to e.

[Quantity of charge] : The quantity of charge is referred to as electricity, which is the quantity value of the charge carried by the object, the international unit of electricity is coulomb, symbol C.

Charges are divided into positive and negative charges, similar charges repel, dissimilar charges attract. There is an interaction between two charged substances, and the force obeies Coulomb's law. Charge is a basic conservation property of many subatomic particles, and we call charged particles charged particles. Is it easier to understand now? Obviously, at a glance.

Charged particles at rest produce an electric field, and charged particles in motion produce an electromagnetic field (emphasis added). The interaction between charged particles and electromagnetic fields is called the electromagnetic force, which is one of the four fundamental forces. This sentence is very important, and many of our future studies rely on this sentence to demonstrate, and many phenomena rely on this sentence to explain.