- What is general relativity for dummies?
- Is general relativity correct?
- How is special relativity different from general relativity?
- How did Einstein prove general relativity?
- Has Special Relativity been proven?
- How is general relativity used today?
- Who disproved the theory of relativity?
- Why can light not escape from a black hole?
- Who invented gravity?
- Does light have mass?
- What predictions of general relativity are verified?
- What Einstein got wrong?
- What does E mc2 stand for?
- Is general relativity incomplete?
What is general relativity for dummies?
What is general relativity.
Essentially, it’s a theory of gravity.
The basic idea is that instead of being an invisible force that attracts objects to one another, gravity is a curving or warping of space.
The more massive an object, the more it warps the space around it..
Is general relativity correct?
So now, as far as we know, even outside our solar system, general relativity is the correct theory of gravity, Collett said. This team of astronomers hopes to study even farther galaxies and lenses, further verifying that gravity works the same throughout the cosmos.
How is special relativity different from general relativity?
Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature. It applies to the cosmological and astrophysical realm, including astronomy.
How did Einstein prove general relativity?
But to test Einstein’s theory, astronomers would have to study the positions of background stars close to the sun’s edge (it’s limb). … If the position of the stars were altered in exactly the way that Einstein’s theory predicted they should be, then this might be just the test general relativity needed.
Has Special Relativity been proven?
Special relativity was originally proposed by Albert Einstein in a paper published on 26 September 1905 titled “On the Electrodynamics of Moving Bodies”. … Today, special relativity is proven to be the most accurate model of motion at any speed when gravitational and quantum effects are negligible.
How is general relativity used today?
Even today, general relativity plays its main role in the astronomical domain, with its black holes, gravity waves and cosmic big bangs, or in the domain of the ultra-small, where theorists look to unify general relativity with the other interactions, using exotic concepts such as strings and branes.
Who disproved the theory of relativity?
In 1935, Silberstein claimed to have found a contradiction in the Two-body problem in general relativity. The claim was refuted by Einstein and Rosen (1935).
Why can light not escape from a black hole?
A scientist named Karl Schwarzschild , discovered that, in a black hole, space-time can be so extremely curved that any light following this curvature cannot escape but, instead, doubles back on itself. This is why light cannot escape from a black hole. Light is curved by a gravitational field.
Who invented gravity?
Sir Isaac NewtonSir Isaac Newton was an English mathematician and mathematician and physicist who lived from 1642-1727. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature.
Does light have mass?
Light is composed of photons, which have no mass, so therefore light has no mass and can’t weigh anything. … But because of Einstein’s theory (and the fact that lightbehaves like it has mass, in that it’s subject to gravity), we can say that mass and energy exist together.
What predictions of general relativity are verified?
Some of the notable predictions of general relativity include:The bending of light passing beside a massive object.Gravitational time dilation.The existence of black holes.The dynamic nature of spacetime.The existence of gravitational waves.
What Einstein got wrong?
DARK ENERGY. Einstein thought his biggest mistake was refusing to believe his own equations that predicted the expansion of the Universe. … Like everyone else, Einstein believed the Universe was static and unchanging, and was horrified when his mathematically beautiful equations predicted a dynamic Universe.
What does E mc2 stand for?
E = mc2. It’s the world’s most famous equation, but what does it really mean? “Energy equals mass times the speed of light squared.” On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.
Is general relativity incomplete?
Yet most researchers think general relativity is wrong. To be more precise: most believe it is incomplete . After all, the other forces of nature are governed by quantum physics; gravity alone has stubbornly resisted a quantum description. … The fix is dark matter, particles invisible to light but endowed with gravity.