What are the latest scientific research questions in physics?

Physics is the natural science that studies the most basic structure, the most universal interactions, the most general laws of motion, and the experimental means and thinking methods used in the material world.

In modern times, physics has become one of the most fundamental disciplines in the natural sciences. The laws of physics that have been verified by a large number of rigorous experiments are called laws of physics. However, like many other theories of the natural sciences, these laws cannot be proven, and their correctness can only be tested through repeated experiments.

The word "physics" first came from the Greek word for nature. In ancient times, Europeans called physics "natural philosophy". In the broadest sense, it is the study of natural phenomena and laws. The word "physics" in Chinese and Japanese originated in the late Ming and early Qing dynasties.

Scientist Fang Yizhi.

The encyclopedic work "Physics Tips".

In the field of physics, the basic components of the universe are studied: matter, energy, space, time and their interactions. A complete understanding of the system is achieved through the fundamental laws and laws that are being analyzed. Physics in classical times consisted of the study of natural philosophy, which was very similar to it, and it was not until the nineteenth century that physics was separated from philosophy and became an empirical science.

Learning method: Feynman, a famous physicist.

"Science is a method," he said. It teaches people:

how some things are understood, what things are known, to what extent are they understood, how doubts and uncertainties are treated, and what laws are obeyed by evidence; How to think about things, how to make judgments, how to distinguish between truth and falsehood and superficial phenomena? ”

Famous physicist Albert Einstein.

"Develop independent thinking.

and the general ability to make independent judgments, which should always come first, and professional knowledge should not be given priority. If a person has mastered the basic theories of his discipline and has learned to think and work independently, he will certainly find his own way, and he will certainly be better able to adapt to progress and change than the kind of person who mainly takes the acquisition of detailed knowledge as the content of his training. ”

Conversion method, equivalent substitution method, experimental method, observation method, analogy method, ideal model method.

The conversion method is an experimental phenomenon in which the physical quantity that is not obvious in the measured phenomenon is transformed into an obvious one. For example, the deformation of a solid is very small, but the deformation can be judged by the light path emitted by the light source fixed on the solid and refracted several times in a plane mirror.

Equivalent substitution is a physical phenomenon that produces a result, and in a similar way, the result is the same. For example, if you want to measure how much work can be done with 1J of energy, you can lift an apple by 1 meter and lift a schoolbag by a few centimeters to get the same result, which is equivalent to substitution.

The experimental method is to verify the known laws through experiments.

The observation method is to observe his physical phenomena by doing experiments (generally pretending that the phenomena are unknown, but in fact, the books tell you).

Analogy is a conjecture that draws a new experimental conclusion from a similar analogy based on a known physical conclusion. For example, the work done to lift an object from the 0 potential energy surface of gravity and the work done to lift an object from the 0 gravitational potential energy surface is used to reason by analogy between the 0 electric potential and the work done by moving positrons from the 0 potential surface.

The ideal model is the idealization of all the conditions of the experiment. For example, the electrical resistance is regarded as 0 and the mechanical air resistance is not counted, and so on.

As far as junior high school physics is concerned: physics is the study of sound, light, heat and electricity, as well as one of their disciplines

Physics is a science that studies the basic forms, properties, motion, historical transformation, and internal structure of matter in the universe, so as to understand the constituent elements of these structures and the basic laws of their interaction, motion, and transformation.

According to the material movement form of the study and the specific study of the object of repentance, it can be divided into:

Mechanics studies the basic laws of mechanical motion of objects and the laws of relativity of time and space.

Thermodynamics is the study of the statistical laws and macroscopic manifestations of the thermal motion of matter.

Electromagnetics is the study of electromagnetic phenomena, the laws of electromagnetic motion of matter, and the laws of electromagnetic radiation.

Optics is the basic discipline that studies the nature of light, the propagation of light, and the interaction between light and matter.

Atomic Physics (atomic

physics) is the science that studies the composition, arrangement, and movement and transformation of atoms. Wait a minute.

The object is metal (ignoring air resistance) and can be negatively charged when struck by lightning, and the environment in which the object is located has a strong upward electric field, and the electric field force should be much greater than the gravitational force f>>g, so that the acceleration a is very large, the object can quickly decelerate to zero velocity so that finally f=g, reaching the brief suspension of the object.

Due to the cosmic rays coming from outer space in the air, the object will be ionized and lose electrons, so that f 0 will continue to move in accordance with the differential equation This f=g is only a very short phenomenon, provided that the object is a metal and has a strong upward electric field.

Does the object carry an electric charge? With the words, the power plant force is greater than gravity, and that's possible, but the meaning of the anti-gravity force of lz is not clarified. Anti-gravity is not that it will not fall.

Instead, it will annihilate with positive gravity. The collision of a positron with a negative electron is a principle of electricity if the object has no charge... Then it will not be affected by the electric field force.

Unless the object is subjected to an electric field force greater than or equal to gravity, and in reverse.

No, it depends on the object, iron and wood are not the same. It also depends on the direction of the current, and the up and down are not the same

There will be ...... in animeIn fact, without the action of force, the state of movement does not change. (To consider the state of motion, the first step is to analyze the force) about the magnetic field....I don't think it has much of an impact.

On what basis do you think it will stop falling?