Discuss classical mechanics and the relationship between relativity and quantum theory

The theory of classical mechanics is a special case of the theory of relativity and quantum theory. The classical theory of mechanics is applicable to macroscopic objects moving at low speed under the action of weak gravitational force, while under the action of strong gravitational force, or high-speed motion, or the microscopic world is not applicable, in these fields, only the theory of relativity and the theory of the son of the world can be used to analyze and study. Relativity and quantum mechanics are a new theory of space-time and gravity, which does not negate the classical mechanics theory, but improves it on the basis of classical mechanics, and has a wider and more comprehensive scope of application.

Like this kind of knowledge quiz, I use the resource library in the 101 education ppt to find, which is rich in resources, and the green plant ppt background does not hurt the eyes for a long time.

Classical mechanics is the part of mechanics that you learn in junior high school and high school, and the theory of relativity and quantum mechanics go beyond the classical category, and you will learn it when you get to college!!

You figure each one out first, and you understand.

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It solves the contradiction between the theory of relativity and quantum mechanics.

a.Quark theory.

b.String Digging Sail Theory.

c.Proton Theory.

d.Neutron theory.

Correct answer: B

Classical mechanics is Newtonian mechanics, which is dominated by Newton's three laws of motion.

The object of general relativity is the macrocosm of the universe, while the object of quantum mechanics is the microcosm of elementary particles.

The number in the figure represents the smallest unit of indivisible positive and negative electromagnetic information - qubits (Qubit) (name physicist John. John Wheeler famously said, "It from bit."

After the development of quantum information research, this concept was sublimated to the point that everything originates from qubits) Note: Bits are bits.

The numbers in the figure represent the smallest unit of indivisible positive and negative chord information - string bits

Classical mechanics and relativistic mechanics are both macroscopic motion, but classical mechanics can only explain the motion of objects at low velocities, in classical mechanics, motion is relative, and classical mechanics is represented by Newton; Relativistic mechanics, on the other hand, says that the motion of an object is close to, equal to, or even greater than the speed of light (for example, when an artificial satellite is moving around the earth, it needs to rely on relativistic mechanics to correct time), relativistic mechanics has little to do with relativity, but represented by Einstein, in relativistic mechanics, velocity and time are relative.

Quantum mechanics is the mechanics of particle motion, of which the more classic is Pauli's incompatibility principle, represented by Planck and others.

Classical mechanics is the basis of relativistic mechanics, and quantum mechanics often relies on relativistic mechanics.

The biggest contradiction between relativity and quantum theory lies in the difference in theoretical foundations. General relativity.

The uncertainty principle is not taken into account.

The theoretical basis of quantum theory is the uncertainty principle. The microscopic view of space-time in the general theory of relativity is continuous and smooth, but because the theoretical basis of quantum theory is the principle of uncertainty, the microscopic view of space-time is constantly undulating and fluctuating, also known as quantum fluctuations. The difference between these two microscopic views of space-time determines that they are incompatible.

At present, almost all theories that pursue unity seek to resolve the irreconcilable contradiction between the two views of time and space. Superstring theory is one of them, and it's reconciled like this. Because quantum fluctuations occur only on very small scales, superstring theory explains that the most basic composition of matter (that is, strings) is much larger than this scale, so it does not affect matter, so that space can be considered smooth, thus harmonizing general relativity and quantum mechanics.

contradictions. Hope!

Contradiction is the theory of relativity, especially general relativity, which is geometric, while quantum mechanics cannot be geometric. The theory of relativity is still classical physics.

Quantum mechanics and the theory of relativity, the combination of the two theories can explain everything, amazing!

Quantum mechanics and relativistic algorithms are applicable to the world of particles and macroscopic objects, respectively.

Since they are not uniform, there is only one problem: these two theories are approximate theories, and they have engineering significance in their respective fields of application, that is, the calculation deviation is small enough to be used in engineering calculations without causing large errors. However, accuracy is relative, inaccuracy is absolute!

That is, both quantum mechanics and relativity are merely algorithms, not absolute physical essences.

Newtonian mechanics seems to be very reasonable, and has long served human engineering and scientific calculations and made great contributions. However, today, with the rapid development of science and technology, under the problem of sub-light speed motion, it is found that the deviation of mechanical formulas is huge, or even the wrong formula. Now using Einstein's modified formula to calculate these problems, we are surprised to find that the original exact mechanical formula turns out to be like this.

But can you guarantee that after a hundred years of scientific development, Einstein's formula will be absolutely accurate? Not necessarily, it's just that the current level of engineering science is sufficient.

Theory is an algorithm, not an essence, and correctness is relative!

There is something wrong with this question.

Both are science. All right.