Where Do Space, Time and Gravity Come From? | Quanta …
2022年5月4日 · Albert Einstein taught us that space and time could warp and bend like a piece of fabric. This warping of the space-time continuum is what we experience as gravity. But Einstein’s theory is mainly concerned with the largest scales of …
Spacetime - Wikipedia
In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams are useful in visualizing and understanding relativistic effects, such as how different observers perceive where and when events ...
Understanding gravity—warps and ripples in space and time
2016年3月2日 · It is here that Einstein connected the dots to suggest that gravity is the warping of space and time. Gravity is the curvature of the universe, caused by massive bodies, which determines the path that objects travel.
Curved Space-Time, Geometric Gravitation - Britannica
Relativity - Curved Space-Time, Geometric Gravitation: The singular feature of Einstein’s view of gravity is its geometric nature. (See also geometry: The real world.) Whereas Newton thought that gravity was a force, Einstein showed that gravity arises from the shape of space-time.
Einstein's Theory of Gravitation - Center for Astrophysics
Their gravity distorts the structure of spacetime, magnifying light from more distant objects. This effect, known as strong gravitational lensing, allows astronomers to study galaxies that would ordinarily be too far to see, map the distribution of mass in the galaxies doing the lensing, and measure the expansion rate of the universe.
How to Think About Relativity’s Concept of Space-Time - Quanta …
2022年11月14日 · So special relativity is the theory of a fixed, flat space-time, without gravity; general relativity is the theory of dynamic space-time, in which curvature gives rise to gravity. Both count as “classical” theories even though they replace some of …
What is the theory of general relativity? | Space
2023年5月14日 · General relativity is physicist Albert Einstein's understanding of how gravity affects the fabric of space-time. The theory, which Einstein published in 1915, expanded the theory of...
What Is Spacetime? - Nature
2018年5月9日 · Gravity is weaker than magnetism or than electric or nuclear forces. Whatever quantum effects it has are weaker still. The only tangible evidence that these processes occur at all is the...
How to Understand Einstein's Theory of Gravity
2019年5月24日 · Time and space are neither flat nor fixed; they are curved and distorted by mass and energy. 2. Gravity is not a force, but rather a distortion of time and space. 3. The effects of gravity are indistinguishable from the effects of acceleration, over a small space.
Relativity - Institute of Physics
The sheer power of these events triggers ripples in the fabric of spacetime that fan out at the speed of light through the universe. What this means is that as the gravitational wave washes past, any object – be it a person or a planet – is distorted, stretching and squeezing in …