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Apr 11, 2022 · With Einstein’s \(E = mc^2\) equation, we can calculate that the amount of energy radiated by the Sun could be produced by the complete conversion of about 4 million tons of matter into energy inside the Sun each second.
In Newton’s theory, if the Sun suddenly disappeared, Earth would immediately “fall out” of its orbit, and we would immediately know that the Sun has disappeared. This would violate Special Relativity because there cannot be a mechanism that would allow us to know that the Sun has disappeared faster than it would take light to propagate ...
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Sep 22, 2015 · According to general relativiy, why does earth revolve around the sun? Does the earth follow geodesics in spacetime caused by sun? Ask Question. Asked 8 years, 7 months ago. Modified 8 years, 7 months ago. Viewed 502 times. 1. I know according to classical theory, its centrifugal force. Also, I need to assure that mass curves spacetime, not space.
Mar 9, 2016 · In a nutshell, the theory of relativity says that we cannot know that the ether is moving because if we were on the sun, the earth would seem to be moving and visa-versa. Apparently, we can't find absolute motion; we can only find relative motion.
- Space and Time
- GPS
- Mercury's Orbit
- Gravitational Lensing
- The Big Bang Theory
- Black Holes
- Dark Matter
- So That's Sorted Then... Well Not Quite
In November 1915, Einstein described gravity with the 10 heavy-handed field equations of general relativity, but what those equations basically say is — gravity is what you get whenever spacetime is warped, bent or stretched. Spacetime isn't something we normally talk about, because we think of space (up-down, left-right, forwards-backwards) as sep...
GPS relies on satellites orbiting high above us, where Earth's gravity is weaker (because spacetime is less warped by Earth's mass the further away you go). So the ultra-precise atomic clocks in the satellites run 45 millionths of a second faster per day than clocks here on the ground, deep in Earth's gravitational well. It's not that the clocks on...
Mercury's orbit has always been a little strange — it's got this weird little kink that none of the other planets have. The only way 19th century mathematicians could account for the kink was if Mercury was being pulled on by something else — like the gravity from another nearby planet, somewhere between Mercury and the Sun. But the proposed planet...
Warped space doesn't just affect matter and time — it bends light around massive objects too. The warped space acts like a lens, making things like distant stars and galaxies visible around closer massive objects that should be blocking them from view. This gravitational lensing was predicted by general relativity — and observations of the lensing ...
General relativity says that when spacetime stretches around a massive object, the light travelling through that spacetime stretches too. So light that starts out one colour ends up a slightly different (longer wavelength) colour after travelling through stretched spacetime. This colour shift is called cosmological redshift (red is the colour with ...
One of the earliest solutions to Einstein's general relativity equations was calculated by German physicist Karl Schwarzchild in 1916, when the theory was still hot off the press This result gave us one of nature's (and Hollywood's) great blockbusters — black holes. These infinitely dense remnants of massive dead stars are so tiny, and their gravit...
Dark matter remains one of the big mysteries of the universe. In fact, the only thing we know about it is that it has mass. And we only know that because the gravity resulting from its mass distorts the light coming from galaxies behind it. General relativity tells us how gravitational lensing should affect this light, and physicists can work backw...
With general relativity, Einstein gave physicists the maths that let them make predictions about the universe based on how gravity affected spacetime. It turned their ideas about the cosmos into science. It has passed every test that has been proposed, but there is a problem with the theory. It can never work with quantum theory, which is extremely...
General relativity is a theory of gravitation developed by Albert Einstein between 1907 and 1915. The theory of general relativity says that the observed gravitational effect between masses results from their warping of spacetime.
Jun 24, 2016 · As massive objects such as the Sun press down on the fabric of spacetime, other objects, such as Earth, react, orbiting in that curved geometry. One hundred years later, scientists are using this theory to make precise models of cosmology, allowing them to explore the evolution of the Universe.
