How great was Einstein?

Newton and Einstein are the two greatest scientific giants in human history. Newton is the discoverer of gravity, and Einstein is the founder of the theory of relativity. However, compared to Einstein, we I seem to know more about Newton's scientific achievements, the most famous of which is the discovery of universal gravitation using an apple. It is said that Newton was hit in the head by an apple and discovered the law of universal gravitation. But looking back at Einstein, few people know about his scientific achievements. Apart from the famous E = mc?, almost nothing is known about his other achievements, but this does not affect Einstein's becoming the greatest scientist of mankind. One, because all seven scientific predictions made by Einstein have been confirmed by later generations. So what are these seven scientific predictions?

Einstein is one of mankind’s greatest scientists

The first scientific prediction: the gravitational drag effect

The gravitational drag effect was attributed to Einstein A famous theory proposed in the theory of general relativity, it mainly reveals the phenomenon of space-time distortion. The scientific definition of the gravitational drag effect is this: when a massive celestial body rotates, the rotation speed and angular momentum generated will cause a certain distortion of the surrounding space, which is the phenomenon of space-time distortion. To give a simple example: fill a bowl with water, and then put a small ball in the water to rotate. As the ball rotates faster, a vortex will be formed on the water surface. This is the gravitational drag effect. This scientific prediction was first discovered by the British physicist Mark Hadley. When he calculated the rotation of the stars in the Milky Way, he discovered that these stars exerted a drag effect on the surrounding space and time. Later, in 2004, the gravity probe launched by the United States B?, progress confirms that the gravitational drag effect is correct.

Gravity drag effect

The second scientific prediction: black hole theory

Black hole theory

The third scientific prediction: the gravitational deflection of light Deflection

In people's traditional impression, light propagates in a straight line and will not be affected by any factors. However, in Einstein's general theory of relativity, the theory of gravitational deflection of light was proposed, to the effect that light It will not be affected by any factors. If the light passes through a celestial body with huge mass, the light will be emitted and refracted due to the distortion of space and time around the celestial body, just like the reflectors we usually use. The gravitational deflection of light is also called "gravitational perspective" because light will emit bending images when passing through strong gravity. The theory of gravitational deflection of light is one of Einstein's most famous theories and is also Einstein's "fame" do?. In 1919, the British used a total solar eclipse to prove that the theory of gravitational deflection of light was correct.

Gravity deflection of light

The fourth scientific prediction: Mercury’s perihelion precession problem

Before this, Mercury’s perihelion orbit around the sun had always produced unexplained irregularities. Orbital change, that is, the aphelion and perihelion of Mercury are not proportional. The perihelion is only 46 million kilometers away, while the aphelion is as high as 70 million kilometers. This is the so-called perihelion precession phenomenon of Mercury. Scientists have never been able to find the reason why Mercury appears to change its orbit when it reaches perihelion. For this reason, scientists believe that there is a new planet called Vulcan in the solar system, and it is this planet that causes Mercury. An "orbital change" occurs at perihelion. Einstein did not agree with this view. He used general relativity to successfully prove the problem of Mercury's perihelion precession. The theoretical values ??calculated based on Einstein's gravitational field equations are consistent with the observed values. Later, the precession values ??of the Earth, Venus, Mars and other planets are also consistent with the theoretical values ??calculated based on Einstein's gravitational field equations. From This confirms that Einstein's previous verification of Mercury's perihelion precession is correct.