Chapter 522:

A law of interaction between objects, discovered in Newton in 1687. Any object has mutual attraction, and the magnitude of this force is proportional to the mass of each object, and inversely proportional to the square of the distance between them.
The law of universal gravitation was first proposed by Newton in the book Principles of Natural Philosophy published in 1687. Newton's use of the law of universal gravitation not only illustrates the laws of planetary motion, but also points out that the satellites of Jupiter and Saturn also have the same laws of motion around the planets. He believes that in addition to the gravitational pull of the Earth, the Moon is also subjected to the gravitational pull of the Sun, thus explaining the two average differences and travels that have been discovered in the Moon Movement. In addition, he also explained the movement orbit of the comet and the tides on the earth. According to the law of universal gravitation, Neptune was successfully predicted and discovered. After the emergence of the law of universal gravitation, the study of celestial bodies was formally established on the basis of mechanics theory, thus creating celestial mechanics. To put it simply, the greater the mass, the greater the gravitational pull, and the gravitational force of the earth's mass is enough to hold everything on the earth.
Any two particles are attracted to each other by forces in the direction of the core. The magnitude of the gravitation is proportional to their mass product and inversely proportional to the square of their distance, independent of the chemical nature or physical state of the two objects and the intervening material.
Gravity is considered to be one of the fundamental forces in the universe in classical physics, proportional to mass and inversely proportional to the square of distance. But in Einstein's theory, gravity is not a basic force, but only the performance of the space-time structure after bending. The reason for the bending of the space-time structure is the huge quality.
According to the theory of general relativity, the time and space around the sun is affected by the huge mass of the sun, forming a space-time curve, while the planet is moving according to its geodesic line, which is equivalent to the uniform linear motion made in the inertial system.
Every particle in the universe attracts all other particles with a force. This force is proportional to the product of the masses of the mass points and inversely proportional to the square of the distance between them.
Specific to the cosmic celestial body under extreme conditions of black holes. It is extremely attractive, and when scientists explain this attraction, they attribute it to space bending. The reason for the space bending is the huge quality of the black hole itself.
According to quantum mechanics, gravity is caused by the exchange of gravitational forces between two particles.
In the early days, people were able to distinguish between forces such as friction, gravity, air resistance, electricity and manpower. For the first time, Newton attributed these seemingly different forces to the gravitational concept: the apple landed, the man had weight, and the moon revolved around the earth, all of which were caused by the same cause.
The reason why light is sucked in by black holes is because the gravitational force causes space to distort, and the light enters the black hole as the twisted space goes. Everyone knows that light only goes straight, and light is not sucked in by gravity, but The light is still in a straight line, but the space is twisted into the black hole. For example, draw a line on the paper and twist the paper. It is still a line.
Light travels along a straight line. According to general relativity, space bends under the action of a gravitational field. At this time, although the light still travels along the shortest distance between any two points, it is not a straight line but a curve. In an image, it seems that the light is going to go straight, but the powerful gravity pulls it.
The scorpio thinks that gravity is the interaction between matter and matter. The gravitational field is the result of this effect. And such a result is like a spatial nature. It is because of this spatial nature that the substance has inertia. Moreover, the magnitude of this inertia is only related to the mass of the substance. The high quality will determine the size of gravity. This is the reason why the gravitational mass and the inertial mass are strictly proportional, which is correct. It is also true that Einstein established the equivalent principle.
Inertia itself is not a force. It is a property of matter in the gravitational field. Do not use gravity and inertia to make a fuss. It is difficult to "gravity is the source of inertia."
At different scales, different particle motions show distinct effects. This is also very philosophical.
In physics, gravitational waves refer to flaws in space-time bending that propagate outward from a source of radiation in the form of waves that transmit energy in the form of gravitational radiation. General relativity predicts the existence of gravitational waves. The existence of gravitational waves is the result of Lorentz invariance of general relativity because it introduces the concept of a limited propagation velocity that introduces interactions. In contrast, gravitational waves cannot exist in Newton's classical gravitational theory, because Newton's classical theory assumes that the interaction of matter interaction is infinite.
Gravity is considered to be an effect of time and space bending. This bending is caused by the presence of mass. In general, the greater the mass contained within a given volume, the greater the spatiotemporal curvature caused at this volume boundary. When a mass object moves in space and time, the change in curvature reflects the change in position of these objects. Under certain circumstances, an accelerating object can change this curvature and can propagate outward in the form of waves at the speed of light. This phenomenon of propagation is called gravitational waves.
When a gravitational wave passes through an observer, because of the strain s effect, the observer will find that time and space are distorted. When the gravitational wave passes, the distance between the objects will increase and decrease rhythmically. This frequency is the frequency of the gravitational wave. The intensity of this effect is inversely proportional to the distance between the gravitational sources. The revolving double neutron star system is predicted to be a very strong source of gravitational waves when they merge, due to the large accelerations that occur as they orbit each other. Since it is usually very far from these sources, the effects observed on Earth are very small.
Gravitational waves should be able to penetrate places where electromagnetic waves cannot penetrate. So guessing that gravitational waves can provide observers on Earth about information about black holes and other strange objects in the distant universe. These celestial bodies cannot be observed in traditional ways, such as optical telescopes and radio telescopes, so gravitational wave astronomy will give us a new understanding of the operation of the universe.
Gravitational and gravitational waves drive the transformation of end-time energy. The source of energy is a huge source of energy in the underground world in addition to natural energy. To be continued.
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