How does gravity warp space How to understand that gravity is a space warp?

This is the essence of all gravitation

In fact, gravity does not exist. Or that gravity is just an explanation for this phenomenon. It is different from other forces.

"Gravity" is actually a manifestation of the distortion of space-time, to give a two-dimensional example: a net of straightened rubber bands.

1.Put two balls of different masses and the same volume, and the net twists.

2.On the basis of 1, let a ball move in a straight line at a uniform speed on the rubber band net, and the closer the distance between the straight line and the (same) ball, the larger the trajectory bend area.

3.On the basis of 2, let a ball move in a uniform straight line on the rubber band net to approach two balls of unequal mass, the distance between the straight line and the two balls is the same, and the ball with large mass passes through the trajectory bend area.

The phenomena illustrated by 2 and 3 are similar to gravity, and there are also cases where the mass and distance are larger, and the gravitational force is greater.

An object moves in a straight line due to inertia, but moves in distorted space, and is affected by gravity.

In fact, gravity distorts four-dimensional space-time.

Another example: light distorts when it passes through massive objects, but gravity cannot act on light, so the explanation is that light travels in a straight line and moves in distorted space-time. But the light still travels in a straight line.

The space with objects is tighter.

Photons originally have no mass but have mass due to their motion reaching the speed of light. Photons bend under gravitational pull. According to Einstein's theory of relativity, space is determined by time and velocity, so space is distorted.

The interaction between any two objects that we intuitively perceive in our daily life must be realized through a certain medium.

The once sensational qigong master who took things from the air first subverted our normal cognition, and then proved to be nothing.

Modern physics has discovered that there are four fundamental forces that drive the world around: strong interaction force, weak interaction force, electromagnetic force, and gravitational force.

The first two forces are forces that are produced at such a short distance between the atom and the nucleus that ensure that the atom can exist; The latter two forces are the forces that can be intuitively felt in our daily lives.

After scientists discovered these four forces, they found a medium for interaction in the first three forces.

But the gravitational interaction has never found a medium.

Scientists have spent a lot of time and designed countless experiments in the hope of finding gravitons that can create gravitational pull between objects.

One of the key assumptions of nineteenth-century scientists was that there was a medium in space called the ether, through which light and gravity were transmitted. (The establishment of Maxwell's equations and the results of the realization of the double slit proved that light is a wave, overturning Newton's hypothesis that light was a particle.) A medium is also required to transmit waves.

Several assumptions were made about the properties of the ether: transparent, rigid, and cosmic.

Scientists have devised various experiments in the hope of proving the existence of the ether.

But these experiments have instead become evidence that the aether does not exist.

Gravitons have also not been found in the field of high-energy physics.

Albert Einstein's theory of general relativity provides a completely new explanation for gravity.

According to the general theory of relativity, gravity does not exist, but the mass of the object causes the distortion of space-time, which gives the illusion of gravitational attraction.

When an object moves in a distorted space-time, it changes the direction of motion in the tangential direction of the force produced in the distorted space.

This is why the planets, including the Earth, revolve around the Sun.

Since it is a distortion of space-time itself, it is natural that there is no longer any need for any medium to transmit the interaction forces between distant objects.

Scientists no longer need to search for a medium to explain gravity.

Albert Einstein also proposed for the first time the wave-particle duality of light, ending centuries-old debate about whether light is a particle or a wave.

Since light has particle properties, it naturally does not need to be transmitted through a medium.