What Is general theory of relativity with definition?

 

The notion of relativity (or general relativity) is a major component of modern physics. It describes gravity based on whether it can ‘curve’ space or more accurately associate gravity with the changing geometry of space.

 

History of general relativity

Albert Einstein settled on his "general" theory in 1915, bringing the "special theory of relativity" which, using  the motion of light in the universe assumed that the laws of physics remained the same in any structure.

 

When Einstein tried to incorporate the masses into his special concept, he realized that the shape of the space (space-time) surrounding heavy objects should be affected in such a way that the object seemed to work as if it could attract others.

 

He knows that the story of the survivor escapes the clothes of the moment, making a ‘turn’ that makes the next point slippery.

 

Gravity tug

Two things have the power to attract each other, known as "gravity." Sir Isaac Newton measured the intensity of two of the objects while making his three motion laws. The gravity between two bodies depends on their size and distance. As the centre of the earth pulls you into it (keeps you seated), the centre of your mass returns to the earth. But a very large body may seem unattractive to you, while your small weight will make you feel grateful for that power. Yet Newton's laws assume that gravity is the natural force of something that can cause distance.

 

Albert Einstein, in his special theory of relativity, determined that the laws of physics are the same for all slow-moving observers, and showed that the speed of light inside space is the same, no matter how fast the visitor travels. As a result, he discovered that space and time are involved in a continuous process called space-time. Simultaneous events can occur at different times for an observer.

 

While working with his general sense of relativity on mathematics, Einstein realized that larger objects cause disruption during space. Imagine having a huge body in the middle of a treble body. The body presses into the fabric, causing it to shrink. The marble wrapped around the edge will rotate inward by pulling in the same direction as the gravitational pull of the planet's gravitational pull.

 

Evidence found by experiments: -

Although devices cannot detect or measure space-time, the number of events predicted by its explosion has been confirmed.

 

Gravity lensing: The light around a large object, such as a black hole, is diverted, making it act like a lens for the objects behind it. Astronomers often use this method to study the stars and galaxies behind them.

 

The Einstein Cross, the quasar of the gas constellation, is an excellent example of the light of gravity. Quasar is about eight billion light-years from Earth, and it sits behind a galaxy about one million light-years away. Images of four quasars appear around the galaxy as the mass of the galaxy bends light from the quasars.

 

Gravitational lensing may allow scientists to see pretty cool objects, but until recently, what they saw around the lens remained motionless. However, as light travels around the lens differently, each passing a different time, scientists have been able to see the supernova magnified by four different galaxies at four different times.

 

In an exciting discovery, Kepler's NASA telescope spotted a dead star, known as white debris, orbiting a small red object in a binary system. Although the white stone is very large, it has a much smaller distance than its counterpart.

 

"This approach is equivalent to looking at a 3,000-mile-long light bulb, about the distance from Los Angeles to New York City," Avi Sporer of the California Institute of Technology said in a statement.

 

Changes in Mercury's Orbit: Mercury's orbit gradually changes over time due to a decrease in space-time around the Great Sun. In a few billion years, it could collide with Earth.

 

Connection of space around rotating bodies: The rotation of a heavy object, such as the Earth, obstructs the space around it. In 2004, NASA launched the Gravity Probe B (GP-B). A well-balanced satellite formed the axes of gyroscopes within the interior over time, a result consistent with Einstein's view.

 

"Imagine the earth as if it were soaked in honey," said Francis Everitt, chief investigator of Stanford University's Gravity Probe-B.

 

"Like the planet's orbit, the honeycomb around it can rotate over time, and it is the same from time to time. GP-BA has confirmed two very important predictions of Einstein's universe, which have had an impact on astrophysics research. "

 

Gravitational Redshift: In the field of gravitational force, the electromagnetic radiation of an object expands slightly. Think of waves crashing from the head of an emergency vehicle; When the car is moving in the viewer, the sound waves are suppressed, but when they move forward, they are stretched or slowed down. Known as the Doppler effect, similar phenomena occur with light waves in all waves. In 1959, two scientists, Robert Pound and Glenn Rebecca fired radioactive gamma-rays at the top of Harvard University towers and discovered that they were much lower than their natural frequency due to distortions caused by gravity.

 

Gravitational waves: Violent events, such as the collision of two black holes, are thought to cause explosions in a space known as gravitational waves. In 2016, the Laser Interferometer Gravity Wave Observatory (LIGO) announced that it had found evidence of these discussion indicators.

 

In 2014, scientists announced that they had discovered the remaining gravitational waves in the Big Bang using the Cosmic Extragalactic Polarization (BISP2) rear telescope in Antarctica. It is believed that such waves are placed behind cosmic microwaves. However, other studies have shown that their data is contaminated with dust on the lines of sight.