What is the significance of physics? What does physics mean What is physics

The value orientation and ultimate goal of physics, so the essence of physics is good; In addition, physicists behave in a good way. Albert Einstein once said of Marie Curie and the outstanding physicists represented by her: "The significance of first-rate people to the epoch and to the course of history is perhaps greater in their moral aspects than mere intellectual achievement".

Their rigorous and realistic attitude, dedication to science, and love for the people are undoubtedly a particularly precious humanistic wealth for future generations. Physics is the most beautiful. The German physicist Heisenberg said:

Beauty is the radiance of truth; The Roman philosopher Plotin once again said: Good is the origin of beauty. Therefore, it is very natural that physics is beautiful because of truth and beautiful because of good.

The beauty of physics belongs to the beauty of science, which is mainly embodied in simplicity, symmetry and unity; Symmetry is unity, unity is simplicity, and they constitute the basic aesthetic norms of physics. When you open the chapter of physics, you can find that the notes of beauty are beating everywhere, reflecting people's pursuit and creation of beauty. Just take uniformity as an example.

The development of contemporary physics is extending in two opposite directions: the grandest universe and the tiniest particles. Surprisingly, with the deepening of research, the two do not go their separate ways and go further and further, but show many signs of convergence and convergence.

For example, some of the research results of particle physics are often used by astrophysicists to explore the early evolution of the universe. (Because of this, particle physics is also called "cosmic archaeology" in a sense.)

Physics is also a culture. Broadly speaking, culture refers to the sum total of material and spiritual wealth created in the course of human historical practice. It includes both scientific culture and humanistic culture.

In the same way, a large number of material and spiritual products created by physicists in their long-term scientific practice constitute physical culture. Physical culture is an important part of scientific culture. As we all know, physics is a science based on experiments, and its basic research method is practice, so it is objectively manifested as "true"; The results created by physics are ultimately for the benefit of mankind, and it embodies "goodness" in purpose; In addition, physics also reflects "beauty" in many aspects such as human emotions and consciousness

It is precisely because physics itself has the triple attributes of truth, goodness, and beauty that we have every reason to say that physics is not only a culture, but also a high-level and high-grade culture. Physics is truth-seeking. Physics pays the most attention to empirical evidence, and the most basic attitude of physicists in scientific research activities is to seek truth from facts and adhere to the principle that "practice is the only criterion for testing truth".

Recognize nature in the service of human beings

1. Physics is a natural science, which focuses on the study of matter, energy, space, and time, especially their respective properties and the interrelationship between them. Physics is the knowledge of the laws of nature; More broadly, physics explores and analyzes the phenomena that occur in nature to understand its rules.

2. The research objects of physics: physical phenomena, material structure, material interaction, and material motion laws.

3. The scale of physics research - the level and order of magnitude of the material world.

4. Spatial scale: atoms, nuclei, elementary particles, DNA length, smallest cells, galaxy clusters, galactic systems, distance from stars, sensitive solar system, supercluster, Hubble radius, etc. The diagram of a man swallowing a snake and swallowing a tail vividly represents the level of the vertical hole in the material space.

1. Physics is a discipline that studies the most general laws of motion of matter and the basic structure of matter. As a leading discipline in the natural sciences, physics studies the most basic forms and laws of motion of all matter, from the universe to elementary particles, and thus becomes the research foundation of other natural science disciplines.

2. Physics began in the era of Galileo and Newton, and it has become a basic science with many branches. Physics is an experimental science, and it is also a science that advocates rationality and attaches importance to logical reasoning. Physics makes full use of mathematics as its working language, and it is one of the most sophisticated natural sciences today.

Physics, physics, the principle of the movement of matter. Mathematical equations are usually used to express the laws of motion of matter, and experiments are used to test whether the equations of motion are correct. The abstract mathematical equation equilibrium reflects the static equilibrium and dynamic equilibrium of the movement of matter in nature.

General physics includes mechanics, heat, electromagnetism, circuit principles, optics, atomic physics, solid state physics, special relativity, etc.; Theoretical physics includes theoretical mechanics, thermodynamics, statistical physics, electrodynamics, quantum mechanics, general relativity, etc.