Understanding the Clock Slow Effect in Special Relativity

This "concrete" is not true.

The spectator in the train, the clock "ticks" twice, and the two events in the train take place in the same place. On the ground, the two events occurred in a different place. Spectators on the ground calibrate their clocks (using the radar method, which is not explained here).

Then the first tick occurs at A on the ground, the second tick is at B, and the difference between the two events recorded at A and B is compared. It will be found to be shorter than the two "ticks" of a clock on the ground.

On the other hand, if a clock on the ground ticks, the spectator who has clocked the train colonel will also find that the two "ticks" are shorter than the "ticks" of the clock he carries. Here the "original time" is the two "ticks" of the clock on the ground.

The time elapsed on the stationary frame of reference (ground) should be substituted into the formula, but the formula should be t=t0 (1-v 2 c 2). δt=δt0 (1-v2 c 2) is the length per unit of time (1 second), and t in your question is the number per unit of time (how many seconds).

Einstein deduced the relationship between the distance clock and the local clock, and used it backwards, that is, the train frame of reference becomes a stationary frame of reference, and the ground frame of reference is converted into a clock. This is not a contradiction.

Suppose there are continuous drops of water on a train traveling at a very high speed, and the person on the train will see that the time difference between the two drops of water before and after is very small. If an observer on the ground takes a radar to measure the time, due to the high-speed movement of the train, when he sees the first drop of water underground, he starts to measure, and when the second drop of water is underground, the train is already far away from him, according to the principle of radar measurement time (reflection), at this time, it takes a long time to wait until the wave emitted by the radar is transmitted to the train and then reflected by the train to the radar, so the time difference between the two drops of water before and after will be relatively large. Therefore, a long time has passed outside the car after a while, that is, the time on the car goes slowly, that is, the clock slow effect.

If you don't understand, you can ask me, I'm an expert in the theory of relativity.

Again, the observer in the theory of relativity and the inertial frame in which it is located are important, and when we describe a phenomenon, we must be clear about which observer is saying it, and which inertial frame the observer is at rest relative to (leaving aside the non-inertial frame involved in general relativity). If one of the two is not clear, the description may be meaningless; If neither is clear, then the description is certainly meaningless.

The descriptions of different observers can be very different, but they are not inherently contradictory, and they can be "translated" into each other through the Lorentz transformation. It's like a cube that looks straight from one side to the side and looks like a square, and one angle turns it into two rectangles, and another angle can be three diamonds. Which pair of these three different shapes are described?

All right! The transformation of the angle of rotation here is similar to the effect of the Lorentz transformation described above.

In the twin paradox, the ship has to undergo an acceleration process, while the younger brother who remains on the ground is always in an approximate frame of inertia. The younger brother can explain that the older brother is younger than him by using the knowledge of special relativity, while the older brother in acceleration must use the knowledge of general relativity to explain the same thing. The older brother who rode the rocket explained his youth like this:

When he did the exercise at a constant speed, he saw that his younger brother was getting younger; Although he was in an extremely strong equivalent gravitational field at the time of departure and landing, because he was very close to his brother at that time, the gravitational potential of the two was not much different, and the difference between their clocks during these two phases was ignored in the estimation. When he makes a U-turn, he is also in an extremely strong equivalent gravitational field, he is very far away from his brother at this time, and the gravitational potential he is in is much lower than the gravitational potential that his brother is in, and he will see his brother age rapidly. Combining the various stages, the younger brother is older.

The relativistic clock-slow effect, then you try to go as fast as possible, it won't be so slow, and then you can solve the problem.

Speaking of the bell slow effect, we also need to talk about the theory of relativity.

The consciousness of relativity is simple, it is relative. After B is in motion, A is also in relative motion for B. So regardless of the acceleration process, when two people move relative to each other, the clock for A to see B slows down and the clock for B to see A also slows down.

So if two people see each other again and are relatively still, the clock will become the same again. Another premise here is that both of them must be in a closed energy system, and both acceleration and deceleration are paying the same amount of energy. The change in relative energy is what causes the change in time.

According to the theory of relativity, time does not flow at a uniform speed, but is determined by its own speed of motion. The faster you move, the slower you will be relative to others. In this way, you will reach the future faster.

Therefore, if you live in a tall building, then because of the rotation of the earth, you will be faster than the person living in a low building, because in the same time, the amplitude (radius) of motion is larger, the speed will be faster, then your time will be slightly slower relative to others, just a few tenths of a nanosecond.

So if you reach the speed of light and sit in a spaceship, then the people outside watch you take a sip of water, and before you can see half of it, the people outside are dead. Therefore, if the speed is infinitely close to the speed of light, time will almost stand still relative to people from the outside world, and its own mass will tend to be infinite. If your speed reaches the speed of light, then time will stand still completely, the mass will be infinite, and the next second will never reach it, and you will come to the end of time, and you will die, so that anything other than light cannot reach the speed of light.

Through this principle, it can also explain why time on artificial satellites is slower than our daily time, because the distance from the ground is fast, and the speed of time passage slows down.

Another implication is that if the speed exceeds the speed of light, then you will go back in time, because you will catch up with the light from the previous second, and at the same time see the scene of the previous second, and then look at the earth again, it will be a movie backwards. But the universe is inconclusive that it is impossible to reach the speed of light, let alone exceed it, this is only the imagination of human beings.

According to the general theory of relativity, the bell downstairs is better than the bell upstairs.

a.Slower. b.Faster.

c.The same. d.Not sure about the remainder.

Correct Answer: a

Clock slowing down is not an optical phenomenon, it has nothing to do with the clock as a clock, it is an abstract concept of time. It is a change in the nature of time and space. There are many relatively simple and intuitive proof methods on the web. Let's look for books strictly.

As you increase your speed, the distance becomes longer and the time becomes longer.

In fact, it is caused by spatial deformation, not an optical phenomenon.

This is a classic clock paradox ... When I studied the theory of relativity, I was also confused, thinking that Zhong was slow because he was too late to walk, but in fact it was not. The clock is slow, because there is no absolute only reference frame of inertia, so the clock is relative, that is to say, A looks at B is slow, B looks at A is also slow, so which clock is slow, it cannot be compared in the special theory of relativity, only the two to the same position to have an absolute fast and slow theory, and the return will inevitably involve acceleration, which inevitably destroys the symmetry of the two, and it is necessary to use the general theory of relativity to prove.

Many people will think that in this way, you can manipulate time and time to go back to immortality, it is also wrong, each point in the space has an eigentime, that is, the time recorded by this point as a reference system, what changes is only the passage of time between different points, and the intrinsic time of the same point cannot be changed. PS: The proof of the clock slow effect is classic, and it is the ideal experiment for that laser mirror timer.

I think that the study of special relativity is still good, and I have time to communicate more.

I think it's like this: Suppose I'm driving a spaceship that leaves the Earth at a speed of u, then if there is a beam of light on Earth that hits my spaceship, the relative velocity of the light and my spacecraft will be c-u to the people on Earth. If I am currently 1 light-year away from Earth, it would take more than 1 year for light to reach my spacecraft for people on Earth.

However, according to the principle of relativity, the physical laws of any inertial frame are the same, so it seems to me that the velocity of light relative to me is still 1c, so for me, light can reach it in just one year. I'm a liberal arts student, and I guessed it based on the principle of "the laws of physics are consistent", and I don't know if it's right or not.

As it approaches the speed of light infinitely, the kinetic mass of the vehicle also increases, reaching the speed of light, and the mass becomes infinite. Infinity? The universe is not infinite, and it is impossible for protons to reach the speed of light.

This is the slow bell effect. The slow effect of the clock is not obvious at low speed, and it can be measured scientifically by 1 millisecond. Therefore, with the relativistic effect of GPS and space navigation, appropriate adjustments are made, and if they are not adjusted, they cannot be positioned.

Einstein proposed the "clock slow effect", where faster-than-light time slows down? Let everything be changed!

The bell-slow effect belongs to the special theory of relativity. Special relativity deals with the high-velocity motion of an object, but it does not discuss the first journey of an object to a high-speed pass, that is, special relativity does not discuss acceleration. In other words, special relativity is a space-time theory that applies to inertial frames.

The question about acceleration falls under the category of general relativity.

Imagine that two people move at high speed relative to each other, and if they both move in a straight line at a uniform speed, they will not meet again. So what you're talking about involves acceleration, which can't be fully explained by the theory of special relativity.