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It's the same as the blue shift of light. When the light source moves towards us, we see its frequency increase, and it looks like a fast shot.
The illusion of two-petaled faster-than-light motion in the observation of quasars is also a problem caused by "fast lenses".
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It is well understood that if the Sun crashes into the Earth at the speed of light, the light emitted by the Sun a second ago would travel 300,000 kilometers more than it does now.
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Regardless of the inertial frame of reference, the propagation speed of light in a vacuum is a constant, c=, which is the principle of invariance of the speed of light. The speed of light is absolute speed, not relative speed.
The theory of relativity holds that matter carrying energy and information cannot move faster than the speed of light, and even if the speed of light is superimposed on the speed of light, the speed is still 1 times the speed of light. From the still ground, the two sub-sources are indeed 7 or 8 times the speed of light, but this is only an visual phenomenon, not really faster than the speed of light. In astronomical observations, there are often superluminal phenomena, but these are not really superluminal speeds, just optical illusions.
The movement of an object close to the speed of light will produce the effects of "bell slowness" and "ruler contraction", the effect of "bell stopping" and "ruler elimination" will occur when moving at the speed of light, and the effect of "bell inversion" and "ruler expansion" will occur when moving faster than the speed of light. "Light emitted later will travel a shorter distance" is the shrinking effect approaching the speed of light.
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Faster-than-light exists, but it cannot carry energy and information. The fact that the two quasars you are talking about are separated at times the speed of light does not violate the special theory of relativity. Because these quasars are so far away from Earth, the expansion effect of the universe is already very obvious, so they have a relative velocity above the speed of light, mainly due to the expansion of space, not to the movement of itself.
Let's talk about your assumptions. You are making the free end of the stick move faster than the speed of light, so you lengthen the stick to such an extent. However, as you increase the length of the stick, you also increase the mass of the stick, so that you have more force to accelerate the stick.
If you want to accelerate its free end beyond the speed of light, then its inertial mass increases to infinity, and the force required becomes infinity, so it cannot exceed the speed of light. In addition, there is no such thing as an over-distance action (instantaneous action), and it takes time for any force to propagate, and it is impossible for a force to travel faster than the speed of light, so that if your super-long stick wants to rotate, it will take a long time for the force to reach the free end, so it is impossible for the stick to exceed the speed of light.
Some friends" can also refute the ideas put forward by the above methods, and we haven't read his words once or twice.
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You now see that two objects are separated relative to an inertial frame at a speed greater than the speed of light, which is permissible and there is no logical violation. But if you measure the speed of B on a quasar A, it won't exceed the speed of light.
I think that when you look at the theory of relativity, there are many details to grasp, and you must also learn some logic beforehand, otherwise you will be laughing and crying about what you often say.
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First of all, according to the principle of relativity, let the rest mass of the object be m1, the moving mass is m2, and the velocity of the object is u, m2=m1 ( (1-u c )) When the speed is close to the speed of light, his mass will become very large, the closer to the speed of light, the faster the mass increases, and in the end there is no motivation to make his speed continue to increase, and where do you find such a big circle, 20 13=, more than the earth, how is this possible.
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In astronomy, faster-than-light motion is an explicit movement that exceeds the speed of light, appearing in some radio galaxies, quasars, and more recently, galactic radiation sources called microquasars. Therefore, objects moving on the earth cannot reach the speed of light, and there is no way to speed beyond the speed of light.
The velocity of quasar emitter separation is a speed that exceeds the speed of light, that is, its velocity exceeds 3 * 10 8 meters per second. The reason why quasar emitters can separate faster than the speed of light is because of the redshift of light rays from outer space.
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The question of faster-than-light is still a mystery today. Because Einstein (who is still the authority on this subject) already connected the speed of light to time and space. In other words, 1+1 may not equal two after reaching the speed of light.
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Travel at the speed of light. Start, seconds, reach the moon, and admire the moon with Chang'e. minutes, to Mars,
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In movies, it is often seen that superheroes can exceed the speed of light, but in reality, it seems to be a very difficult thing to exceed the speed of light under today's technological conditions, because the current statement only appears in theory.
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Above 299792458 meters, as long as it exceeds the speed of light, the real speed of light is 299792458 meters per second, about 300,000 kilometers per second.
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, that's trying to be fast! No object has been found that can exceed the speed of light, but space-time can expand faster than the speed of light, and the expansion of the universe exceeds the speed of light
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..There is no faster-than-light at the moment ... The so-called faster-than-light is just speculation, and the speeds that exceed the speed of light are collectively referred to as faster-than-light... 3*10 8+1 is faster-than-light. 3 100 is also faster than the speed of light ...
It's not a formula. faster than light is faster than light ... There is no specific value.
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Speeds greater than 300,000 kilometers per second are called faster-than-light.
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There is no specific number, as long as it is bigger than 299,792,458.
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It must be more than 299792458 s, and you can choose the specific number.
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Suppose A wants to give B a force to the right, then A's speed to the right is greater than B's speed to the right, however, A cannot exceed the speed of light, so when B's speed to the right reaches the speed of light, A cannot exert a force to the right on B, so B cannot exceed the speed of light.
Certification. By the way, you don't want to use any magnetic accelerator or something, regardless of electromagnetism, the speed of its field is only the speed of light, and it cannot exceed the speed of light.
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The question of the transcendence of the speed of light is a question that is often raised.
According to the theory of relativity, the speed of light is unsurpassable.
For massless photons, there is no possibility of acceleration. For matter with mass, acceleration cannot reach the speed of light, but can only approach the speed of light infinitely, and the required energy is already approaching infinity.
As for the answer of yf99999, it is completely inconsistent with the theory of relativity. According to the theory of relativity, if you look at two beams of light in opposite directions on one of them, you will find that the speed of that beam of light is still the speed of light. Here are some preliminary calculations of the theory of relativity.
You can read some books about the theory of relativity. This part of the content is only a special theory of relativity, and it is relatively easy to understand.
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According to classical relativity, no, because e=mc square, the mass of an object with mass increases if it is accelerated by speed.
When the speed is increased to the speed of light, its mass is infinite, and the energy of the cultivation is also infinite, so it is impossible. But quantum mechanics is an example of allowing for certain special cases when greater than the speed of light, such as large ** when there are particles greater than the speed of light.
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Under Einstein's classical theory of relativity, the speed of light is unsurpassable, a conclusion that has not been challenged to this day.
Because photons have no rest mass, and photons are particles that transmit electromagnetic interactions, it is impossible to "give a force to photons". None of the three fundamental forces (strong and weak interactions, and electromagnetic interactions) can be exerted on photons, and gravity, though I don't know very well, cannot accelerate photons (attracting light with a large mass only causes it to redshift).
Matter other than photons with rest mass tends to infinity when the velocity approaches the speed of light, and the acceleration tends to zero. In this way, they can't even reach the speed of light.
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In the theory of relativity, the speed of light is the theoretical limiting velocity
Turn on the faucet, what if you want the water to flow faster (not wider)? But if you want to apply force to water with your hands, you need to move faster than the speed of the water, and now if you compare the flow of water to the speed of light, then the object applying the force needs to exceed the speed of light, which is not possible
A black hole is a star with a very high density (gravity) and the speed of light is also sucked in, that is, the speed of light does not reach the escape speed of leaving the black hole
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OK! OK! For example:
In 1991, the Italian National Institute of Electromagnetic Waves conducted a convincing experiment in which they passed a microwave beam through a waveguide. As the waveguide lengthened, they found that a portion of the microwave passed through the duct at faster than light speed. In 2000, Chinese-American Wang Lijun and others emitted light pulses into a cesium gas container filled with special treatment, and they found that the speed of the gas here was 310 times the speed of light in a vacuum.
From 1972 to 1974, some astronomers in the United States discovered that Seifert 3c120 expanded at four times the speed of light. By 1977, the two components of the quasars 3c273, 3c345 and 3c279 were discovered to separate at 7 times, 10 times, and 19 times the speed of light. Later, astronomers used long-baseline radio interferometers, which had excellent resolution, and later discovered that 10 quasars separated at 7 to 8 times the speed of light at both sub-sources.
And Einstein is not wrong? The theory of relativity is also said to have some errors. If you don't believe me, please refer to the relevant books.
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No, if you want to add a force to light, you have to be higher than the speed of light, so that there is a way to make light higher than the speed of light. But nothing seems to be faster than the speed of light.
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No, according to the theory of relativity, the speed of light is the theoretical limit of speed, how to add force? Even if you look for the flashlight from the plane, the speed of light remains the same.
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Relative velocity is OK, if there are two beams in opposite directions, then with one beam as a reference, the speed of the other beam is twice the speed of light. So 2 times the speed of light is the maximum speed.
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The ideal can, but in reality it can't.
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Aren't black holes faster-than-light?
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Current scientific research shows that light is the fastest in the universe, that is, it can't.
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No, you don't know from the future, because if you exceed the speed of light, you will definitely be able to travel through time and space.
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One of the assumptions of the theory of relativity is that the speed of any object cannot exceed the speed of light, because m=m (the square of 1-v, the square of c) is squared against the denominator
From this formula, we can know that when the velocity is close to the speed of light, the denominator tends to 0, so the mass tends to infinity This is not possible Also, e=1 2 mv2 can know that since the mass is infinite and the energy is infinite, there is nothing outside to offer
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The determination of the speed of light, whether measured at rest on Earth or moving in the universe, is constant. That is, the speed of light is not affected by the light source, nor is it affected by the speed of the observer's movement. It is an absolute value, which is the theory of the invariance of the speed of light.
Einstein's theory of relativity tells us that the speed of light is the maximum speed and that it is impossible for any motion to exceed the speed of light. People are also convinced of this.
If there were objects in the world that moved faster than the speed of light, Einstein's theory of relativity would not hold. Facts have also proved that on the earth, in our daily life, there is indeed no moving object faster than the speed of light. The problem is that just because there is no one on Earth does not mean that it does not exist in the vast universe.
In the world of elementary particles, will there be a phenomenon of faster than light?
Physics tells us that the speed of particle motion is extremely fast, and in a high-speed accelerator, the speed of motion can reach 200,000 kilometers per second, or even 250,000 kilometers, so will there be particles faster than the speed of light?
Just when people were skeptical about this, a phenomenon was discovered by the former Soviet scientist Cherenkov. Light travels slower in water than in a vacuum, whereas high-velocity particles travel faster than the speed of light in water. This phenomenon, discovered by Cherenkov, was later confirmed by other scientists.
Therefore, the discovery of this phenomenon has undoubtedly opened the horizon of human beings, who believe that there are faster-than-light particles in nature, named "tachyon". In this way, some physicists divide elementary particles into three categories: slowons, photons, and tachyns.
Slowon, whose speed does not exceed the speed of light, means slower than the speed of light. And the photon is the speed at which light travels. Tachyons, particles that are faster than the speed of light.
However, such a division is still an assumption, and the key is to find the "fast son". How to find out is another mystery.
The above is the conjecture of human beings in the microcosm, why not turn our eyes to the vast universe?
Astronomers made a major discovery in the 20th century, namely quasars. This is a very special celestial body, which uses the radio waves of this kind of celestial object received by astronomical telescopes to make a photograph that looks a bit like a star, but is not a star, so it is named a quasar. Observation of the stars revealed the presence of faster-than-light phenomena.
A quasar of 3c120 is beginning to be discovered, which is expanding at 4 times the speed of light. Scientists are amazed that there is such a strange phenomenon in the distant depths of the universe. Quasars that were later discovered included two radio sub-sources.
Two sub-sources as well as high velocity separation. The quasar 3c345 separates at 7 times the speed of light. After 7 years of observation, it was finally established that the two sub-sources of another type of star separated at 10 times the speed of light.
Physicists and astronomers have argued and put forward many different opinions, some people are absolutely correct because of the theory of relativity, there is no faster-than-light phenomenon in the world, and quasars are just an illusion, called apparent faster-than-light expansion. Meaning it looks like faster than light, but it's not. Another view is that quasars do separate faster than the speed of light.
Either way, there are imperfections, and it is hoped that this issue will be resolved in the 21st century.
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