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Gravitation has always existed because it was first discovered by Newton, in an interesting story in which the young Newton sat under the apple tree and "thought about life", and suddenly was hit on the head by a ripe falling apple, Newton discovered the law of gravitation as if he was enlightened. Newton thought that the force that causes an apple to fall to the ground and not fly up to the sky is the same force that causes the moon to "hang" high in the sky.
But in fact, the discovery process of gravity is definitely not so simple, with the accumulation of previous scientists, Newton won this achievement in one fell swoop. In the textbook, Newton once said: I stand on the shoulders of giants.
This is used to express Newton's modesty, but in fact this sentence is Newton's mockery of Hooke, because Hooke is hunchback and has a congenital physical defect. <>
Newton's interpretation of gravitation is flawed, although we still use the formula of gravitation, which is proportional to the product of mass and inversely proportional to the square of distance. However, Newton's interpretation of gravity is that gravity is a kind of transcendent effect, which is simply explained: for the solar-terrestrial system, if the sun suddenly disappears, then the earth will instantly lose its gravitational effect and go out of orbit.
But this way of acting at a distance does not exist, and the process of gravity also has a velocity, and now we know that the speed of gravity is equal to the speed of light.
Einstein's birth broke Newton's absolute view of time and space, and also reinterpreted gravity in essence. The general theory of relativity holds that gravity is the external manifestation of the curvature of space-time, and that mass tells how space-time bends and how the bent space-time high-speed matter moves. And predicted the existence of gravitational waves, which are simply understood as ripples in space-time, with a speed equal to the speed of light.
At the moment this is the essence of gravity - space-time bending. <>
Quantum mechanics also tried to explain the nature of gravity, thus proposing the concept of graviton, but the mathematical process of graviton is complicated and uncorrect, and they have not been found in the collider, and it is likely that gravitons do not exist. In the Standard Model of particle physics, there are 61 kinds of elementary particles (excluding gravitons), elementary particles composed of matter, and propagators that explain the three basic forces of electromagnetic force, strong interaction force, and weak interaction force.
The M theory, which stands at the forefront, can unify the four basic forces and the basic composition of matter, and of course also essentially explains the gravitational force, and the different vibration forms and vibration frequencies of strings can exhibit different properties and produce the four basic forces.
The black hole of literature and science, the **** network invasion and deletion.
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The essence of gravity is that all objects are completely attracted to the center of the earth without any autonomous dynamic action. It's like an engine goes off and the plane crashes to the ground.
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Gravity is a problem of a virtual magnetic field, if you are somewhere else there is no gravitational force. Then the earth's gravity is such a magnetic field reaction, and people can stand and fall asleep and sit.
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The essence of gravity is the electromagnetic field. The earth itself is a large magnetic field, and all the material in the earth is affected by the geomagnetic field, and the larger the volume, the greater the magnetic force, but we cannot see this force ourselves.
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In fact, the essence of power is a kind of energy emitted from the body, and then this essence can make your body particularly strong and powerful, which also represents the quality of a person's body.
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The nature of gravity is caused by some magnetic fields plus light, and this currently also involves the curvature of space-time. In this way, the gravitational pull of the earth is very magical, and anyone can do it.
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Gravity and gravity are forces of the same property of the shed bond, but gravity is a gravitational force, one of the sub-families and scattered forces, and the other component of gravity provides an object on the earth to move in a circular motion with the earth.
The centripetal force, the combined force of gravity and centripetal force is the gravitational force.
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It is the same force of nature and belongs to the gravitational force. The gravitational force is divided into centripetal force and gravity, the centripetal force of the slag beam on the equator is the largest, the gravity is the smallest, and the gravitational force is equal to the gravity plus centripetal force. The centripetal force of the north and south poles is zero, the gravitational force is equal to the gravitational force, the gravitational force is the maximum, and the other positions, the gravitational force is between the maximum and the minimum.
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Gravity is the force exerted on an object due to the attraction of the earth to the shed.
Gravity is not equal to the gravitational pull of the Earth on an object. Due to the rotation of the earth itself, in addition to the poles, objects in other places on the ground are moving in a uniform circle around the earth's axis with the earth, which requires a centripetal force pointing perpendicular to the earth's axis, and this centripetal force can only be provided by the earth's gravitational force on the object, we can decompose the earth's gravitational force on the object into two components, one component f1, the direction points to the earth's axis, and the magnitude is equal to the centripetal force required for the object to move in a uniform circular motion around the earth's axis; The other component g is the gravitational force on which the object is chained (illustrated), where f1 = mw2r (w is the angular velocity of the earth, r is the radius of rotation of the object), and it can be seen that the magnitude of f1 is zero at the poles, increasing with the decrease of latitude, and the maximum f1max is in the equatorial region. Because the centripetal force of the object is very small, in general, it can be considered that the gravitational force of the object is the magnitude of the gravitational force, that is, the effect of the rotation of the earth can be omitted in general.
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Gravity is the interaction between material factors. Along with the energy characteristics, the field characteristics, a tendency to move is generated.
The mechanism of gravity is as follows: energy --- matter + space, (relativity extension). The process of a mechanism can produce spatial changes and produce motion, and the energy characteristics cause the propagation of material factors combined with spatial factors, and between two objects, the two factors undergo scattering alienation and cause a tendency of motion.
The essence of gravity is not a force, and even gravity itself does not exist, Newton thought that gravity is a force after proposing gravity, but what is the medium of gravity, he can not explain, he can only put forward the almighty "ether" to explain the propagation of gravity, and the ether is an imaginary substance proposed by scientists, this material is flooded in the universe in large quantities, and when some unexplained phenomena appear, scientists will take out the ether to save the field, but with the development of science, Einstein's general theory of relativity pointed out, Gravity is not an acting force, and scientists have denied the existence of "ether".
Although the aether does not exist, modern scientists have found that there is indeed a large amount of invisible matter "dark matter" in the universe, which is very similar to the aether envisioned by scientists, except that dark matter has evidence to prove that it does exist, and after in-depth research on dark matter in the future, it may be possible to discover some new ideas and change our understanding of gravity.
The topic returns to gravity, many people think that gravity is a natural force, this view is actually wrong, because after in-depth research, the essence of gravity is generated by the mass of the object, as long as an object exists objectively, it will produce mass, not because of the gravitational pull of the object to produce weight, but in different gravitational fields, the mass will change.
When an object exists in the universe, it will have an impact on the surrounding space, which is what we often call gravity, as long as there is a mass object, it will produce gravity, but the mass of most objects is insufficient, and the gravitational force generated can be ignored, so human beings cannot feel other gravitational force in addition to feeling the gravitational pull of the earth in daily life.
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The essence of force is the interaction between material entities in the process of direct contact with each other. This is true for both the force and the "force" in the phenomenon of gravitational force. There is no question of "force" between celestial bodies.
The steady state between the celestial bodies is maintained by the dynamic equilibrium achieved by "motion". The "gravitational force" between celestial bodies, calculated by Newton's gravitational formula, is a non-real "force". "Force" and "motion" are not the same thing.
They are mutually causal, not one-way causality. The reason that changes the speed of motion of matter is not just the force, the mass field can also be a cause that changes the speed of motion of matter.
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Gravitation was first discovered and explained by Newton, and a formula for calculating the magnitude of gravity was also given, and it is still used when the calculation of gravity does not require high accuracy.
But Newton did not explain gravity in essence.
The law of gravitation states that gravity is an action at a distance, and we know that this instantaneous distance is the least favorite thing for scientists.
As time progressed, science advanced, and the Michelson Morey experiment failed to prove the existence of the aether, disappointing many scientists, at a time when most scientists thought that the experiment was wrong.
At the age of 26, Albert Einstein came out of nowhere, accepting the fact that the ether does not exist and believing that the speed of light does not change, and proposed the special theory of relativity in 1905.
After ten years, gravity was added in 1915 and the general theory of relativity was proposed, and the core of the general theory of relativity is the curvature of space-time.
This gives a more essential explanation of gravity: gravity is an outward manifestation of the curvature of space-time, and is not actually a force.
The simple understanding is this: how the mass of high-speed space-time bends, and the curved space-time tells the object how to move.
Quantum mechanics, which is on the same level as the theory of relativity, is also one of the two pillars of physics in the twentieth century, and this theory gives an essential explanation of the four fundamental forces, the strong force, the weak force, and the electromagnetic force, from the microscopic level, and believes that the force is due to the exchange of elementary particles.
However, the problem arose when the interpretation of gravitational Venus came up with an elementary particle model of graviton, which in fact may not exist.
That is, quantum mechanics is powerless against gravity.
This is also one of the contradictions between the theory of relativity and quantum mechanics.
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Gravitational force, i.e., the force of attraction between any two objects or two particles in relation to the product of their mass.
According to the current human cognition, the essence of gravity is space-time distortion.
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From a philosophical point of view, the world is made of matter, so gravity is a natural physical phenomenon that is the fundamental property of matter. Just like yin attracts yang, yang attracts yin, women attract men, men attract women, females attract males, males attract females, and ......Therefore, gravity is formed by both the demand and the demanded, so Newton had the philosophical idea of gravitation.
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Gravitational attraction in physics is determined by the mass and distance between objects, and the essence of gravity lies in the positive and negative charges between atoms.
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If you give the essence of power, the main thing is to elevate the essence and have the ability to have a professional essence.
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When the concept of gravitation was proposed, everyone had a new understanding of the world in which they existed, and then due to the continuous improvement of the level of science and technology, we discovered a physical truth, whether it is an object or space, or a living thing, etc., in fact, it is composed of the smallest particles. So then the concept of quantum space is proposed, so what exactly is gravity that we often talk about? What exactly is its essence?
Let's take a closer look.
If we want to understand what gravity is and what it is, we need to understand how quantum space came to be. After research, we all know that quantum space, in fact, is not the same, nor symmetrical, when they collide together, due to the difference between the inner and outer sides of the space, it will lead to the actual pressure difference, then this is what we call gravity.
As long as everything in the world exists, it will cause a pressure difference that we can't see with the naked eye, so for this asymmetry, there will be a gravitational situation, then we have to say another word, quantum entanglement. In fact, gravity itself causes asymmetry in quantum space and then causes entanglement, because any object will produce a pressure difference due to differences, gravity exists in the physical world, but in our daily life, gravity is everywhere, and we are affected by gravity anytime and anywhere.
Therefore, this energy characteristic is formed with the movement of quantum space, what we often call gravity, many people will think of it as just a simple force, but in fact, gravity is the existence of a medium, and many scientists in the actual research process, did not figure out why the medium exists, and then led to the existence of dark matter, so the study of physics is endless, it is closely related to our mysterious universe, and the vastness of the universe, This makes us even more unpredictable.
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Einstein said that gravity is just the bending of space, and I was angry, so I retorted: the bending of space is high-dimensional mechanics, and gravity is graviton. Albert Einstein asked: Who gave you guts? Dare to refute my theories. I said, "God."
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The reason for the occurrence of gravitational force (brief description): When the high-energy particles moving in the universe pass through matter (celestial bodies or particles), part of them are intercepted and absorbed to form a weak energy region (Einstein's space-time curvature), which is the gravitational range mv2=e=mv2 (the formula of the law of conservation of energy conversion). For more details, please see the forthcoming gravitational hypothesis, "Elemental Periods and the Causes of Gravitation".
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