The second inquiry: Is the special theory of relativity true?

Does anyone know what will happen in the future if you say the right theory now? It's like Newton's laws.

Nowadays, it is believed that matter is in absolute motion, relatively static, and that what has no mass is not matter. You can't talk about quality without movement, you try to connect them all and don't think alone. Leaving the Earth can also talk about mass, in the extraterrestrial matter is also moving, mass is actually a current state.

Many laws have a scope of application, Newton's laws are still in use, and it cannot be said that this law is wrong, but it can only be said that this law is used outside the scope of application. When the impact is small and does not need to be precise to this extent, it can be ignored.

It should be said that you have not yet entered the space of relativity. Isn't what exists objectively incapable of changing? Is it necessarily the same result seen from different perspectives (i.e., frames of reference)?

The mass of an object is not objectively present and remains constant all the time, such as photons and neutrinos, which do not have a rest mass, only a moving mass. When an object is at the low-speed limit, its approximate resting mass is observed, and when the object is moving at a speed close to the speed of light, what is observed is its cumulative mass, i.e., the sum of the partial superposition of the object's masses in relative space.

Time is just a reference quantity set in people's minds, and its magnitude changes with the motion of an object, and the special theory of relativity holds that time does not have a uniform standard value, and in a local inertial frame, time is changed by the motion of an object. If we abandon the traditional view of absolute space-time and relate space-time to the movement of objects, we will find that our common sense is wrong. The special theory of relativity is correct.

The special theory of relativity has two basic assumptions: 1. The principle of invariance of the speed of light: the speed of light in any frame of reference in a vacuum is constant 2. The principle of relativity: for all inertial frames, all physical laws have the same mathematical expression.

The narrow principle of relativity, also known as the principle of relativity, refers to the fact that the laws of physics hold true in all inertial frames of reference, i.e., it is impossible to experimentally distinguish which frame of reference is preferred or special. Thus, there is no such thing as an absolute space-time for all things. The formulation of this principle is a critique and expansion of Newton's concept of space, which breaks Newton's concept of absolute time and space.

The principle of special relativity overturns the well-known notions of "absolute" space, time, and velocity, and replaces a new method of coordinate transformation known as the Galilean transform.

The principle of invariance of the speed of light, also known as the principle of equivalence, states that the speed of light propagation in a vacuum is independent of the state of motion of the emitter, that is, the speed of light remains constant in different inertial frames of reference, which means that the speed of light is the highest speed in the universe. The principle of invariance of the speed of light breaks Newton's principle of relativity, because Newton believed that an increase in velocity will lead to an increase in the acceleration of the object's motion, i.e., a change in momentum, relative to a stationary object. But special relativity suggests that when a stationary observer sees a light source emitting light, they will measure the same speed of light, regardless of the observer's own velocity.

These two basic assumptions are extremely important for Einstein's special theory of relativity. In this theory, many strange phenomena, such as the relativistic effect and the duality of mass and energy, are deduced from the two basic assumptions of the scatter. For example, as the speed approaches the speed of light, the mass of the object increases, and the time and length also change.

These phenomena are known as "relativistic effects", and their existence is determined by the principle of special relativity and the principle of invariance of the speed of light.

In short, the two basic assumptions of special relativity play a pivotal role in the field of theoretical physics, and their ideas have been widely used in modern physics, which not only affects the research in the field of physics, but also profoundly affects mankind's understanding of space, space and the universe.

All theories of physics, and even all theories, are based on certain assumptions. There is no theory that does not make assumptions, at most it is only that the assumptions on which it is relied are accepted (i.e., the so-called axioms) or even (rigorously) proved (i.e., the so-called theorems, laws, etc.). However, it should be added that even the strict proof is pushed to the most primitive Li Qingji degree depends on assumptions, for example, the five axioms of Euclidean geometry are the foundation of Euclidean geometry, and all Euclidean geometric proof solutions will eventually be pushed here; At the same time, it is also required that the process of proving and solving according to the logical conclusions is valid.

If the hypothesis is valid, then the theory can play a role within the scope specified by it, and play a role and have an impact according to the development of society. And if the hypothesis is invalid, the corresponding theory loses its foundation and becomes a castle in the air, and even if it happens to get the right result, it is still not recognized.

Special relativity is a theory of electrodynamics pioneered by Albert Einstein (although he was influenced by others during his creation, at least Michelson Morey's experiments confirmed the invariant phenomenon of the speed of light). Since its hypothesis is valid (and has been fully experimentally verified), this theory is naturally valid, and thus has the necessary conditions for its impact; As for how much this theory can play, it depends on the development of society; Since the contemporary society has reached the level where nuclear energy can be applied, special relativity can naturally play its role, but if science and technology cannot reach the level of nuclear energy, special relativity will stay more at the theoretical level. At the same time, in addition to the typical application of nuclear energy, the special theory of relativity also inspired Einstein to establish the general theory of relativity, which established his academic status, although the influence of the latter is not as intense as that of nuclear energy, but the participation of the theory of relativity in the field of precision timekeeping is absolutely indispensable.

In fact, the role and significance of the theory of relativity still go beyond that, but it is not relevant to this issue.

The special theory of relativity is proposed by ().

a.Max Kinave.

b.Boltzmann.

c.Kirchhoff.

d.Albert Einstein transports lead rock.

Correct answer to the case next to the royal case: d

Known: v=, u=, t=, l=10(m).

The bullet rate seen by the person on the platform v'=(u+v)/(1+uv/cc)=(；The person on the platform saw A and B being L apart'=l*(1-uu/cc)^

Let the person on the platform see the moment of injury as t, and the distance that the carriage has traveled (i.e., the distance that b has moved) is s. Then when the bullet hits: v't=s+l',ut=s,so,t=l'/(v'-u)=8 >t, so the person on the platform sees b and shoots back first.