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Stevek113
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PHYSICS
General Relativity
Spacetime Curvature
Gravity emerges from the invisible curves in the fabric of spacetime, not from a force pulling at a distance
39 hours ago
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What fundamental shift does the concept of spacetime curvature introduce in understanding gravity compared to Newtonian physics?
Gravity is caused by invisible particles transmitting forces between masses.
Gravity arises from the geometry of spacetime rather than a force acting at a distance.
Gravity only affects objects when they are physically touching each other.
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Nellieger
I am studying psychology
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PHYSICS
General Relativity
Gravity Probe B Experiment
Earth's rotation subtly twists spacetime, revealed by ultra-precise gyroscopes in orbit
3 days ago
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What was the primary challenge Gravity Probe B faced in measuring the geodetic effect and frame-dragging?
Measuring the gravitational pull of the Moon on the satellite's orbit
Detecting extremely tiny changes in gyroscope spin direction caused by spacetime curvature and rotation
Proving that gravity is caused by electromagnetic forces rather than spacetime curvature
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Steve_Alias
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PHYSICS
Theoretical Physics
General Relativity
Gravity is not a force but the shape of spacetime itself bending under mass
5 days ago
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What fundamental change does general relativity introduce compared to Newtonian gravity?
Gravity is a force transmitted instantaneously through space between masses.
Gravity is the effect of curved spacetime caused by mass and energy, not a force acting at a distance.
Gravity only affects objects with mass and does not influence light or time.
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Steeeve
Steeeve is an IT guru
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PHYSICS
General Relativity
1919 Solar Eclipse Experiment
A 1919 eclipse proved Einstein's radical idea that gravity bends light, reshaping physics forever
6 days ago
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Why was the 1919 solar eclipse critical for confirming Einstein's theory of general relativity?
Because it allowed astronomers to observe the bending of starlight by the Sun's gravity, confirming Einstein's predictions.
Because it was the first time a solar eclipse was photographed with a telescope.
Because it showed that Newton's laws of gravity were completely wrong in all situations.
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Nellieger
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PHYSICS
General Relativity
Einstein Field Equations
Spacetime's shape bends and twists under matter's invisible hand, rewriting gravity's story
7 days ago
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What fundamental relationship do the Einstein field equations describe that changed our understanding of gravity?
They describe gravity as a force acting instantaneously at a distance between masses.
They explain gravity solely as a property of mass without involving spacetime geometry.
They relate the curvature of spacetime to the distribution of matter and energy within it.
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PistonHeads
Cars, cars and cars
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PHYSICS
General Relativity
Einstein Field Equations
Einstein’s equations predicted black holes decades before they were observed
6 Feb 2026
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What fundamental relationship do the Einstein field equations describe?
They describe how electromagnetic forces act between charged particles.
They relate the curvature of spacetime to the distribution of matter and energy.
They explain gravity as a force acting instantaneously at a distance.
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Bonbo
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PHYSICS
General Relativity
Gravitational Waves
Gravitational waves are ripples in spacetime predicted by Einstein's theory of general relativity
4 Feb 2026
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What fundamental theory predicts the existence of gravitational waves as ripples in spacetime?
Isaac Newton's law of universal gravitation
Maxwell's theory of electromagnetism
Albert Einstein's general theory of relativity
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PistonHeads
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PHYSICS
Theoretical Physics
General Relativity
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Einstein's general relativity reveals gravity as the curvature of spacetime shaped by mass and energy
2 Feb 2026
Einstein's general relativity reveals gravity as the curvature of spacetime shaped by mass and energy General relativity, also known as the general theory of relativity or Einstein's theory of gravity, is a fundamental theory in...
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SteveO1
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PHYSICS
General Relativity
Gravity Probe B Experiment
Gravity Probe B confirmed subtle spacetime distortions predicted by Einstein's theory in Earth orbit
1 Feb 2026
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What physical phenomena did Gravity Probe B aim to measure to test general relativity?
The bending of light around the Sun during an eclipse
The geodetic effect and frame-dragging caused by Earth's mass and rotation
The expansion rate of the universe due to dark energy
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Bonbo
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PHYSICS
Theoretical Physics
General Relativity
Einstein's general relativity reveals gravity as the curvature of spacetime shaped by mass and energy
1 Feb 2026
0
How does general relativity fundamentally differ from Newton's law of universal gravitation in describing gravity?
It treats gravity as a force transmitted instantaneously through space between masses.
It describes gravity as the curvature of spacetime caused by mass and energy, rather than as a force acting at a distance.
It ignores the effects of energy and momentum on gravitational interactions.
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SteveO1
Technology and cars
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PHYSICS
General Relativity
Numerical Relativity
Numerical relativity uses supercomputers to simulate black holes and gravitational waves in Einstein's universe
22 Jan 2026
1
Why is numerical relativity essential for studying the merger of binary black holes?
Because numerical relativity provides exact analytical solutions for black hole mergers.
Because numerical relativity replaces the need for observational data from gravitational wave detectors.
Because the Einstein field equations are too complex to solve analytically for dynamic, strong-field scenarios like black hole mergers, requiring numerical simulations.
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Stevek113
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PHYSICS
General Relativity
1919 Solar Eclipse Experiment
1919 Solar Eclipse Validated Einstein's Theory of General Relativity with Star Light Bending
20 Jan 2026
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What was the key observation made during the 1919 solar eclipse that supported Einstein's general relativity?
The bending of starlight by the Sun's gravity matched Einstein's predictions.
The Sun's brightness increased due to gravitational lensing.
The eclipse caused a change in the Earth's orbit confirming relativity.
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SteveO1
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PHYSICS
General Relativity
Gravitational Lensing in Extreme Spacetimes
Simulating light bending near black holes reveals the warping of spacetime in extreme gravity
19 Jan 2026
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What key aspect of general relativity must be solved to accurately simulate extreme spacetime lensing around massive objects?
Newton's law of universal gravitation assuming gravity as a force
Einstein's field equations describing spacetime curvature
Special relativity equations ignoring gravitational effects
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FordMotor
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PHYSICS
General Relativity
Gravity Probe B
Gravity Probe B confirmed subtle spacetime warping effects predicted by Einstein's relativity
18 Jan 2026
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What are the two relativistic effects that Gravity Probe B was designed to measure, and how do they differ in their influence on the gyroscopes?
The gravitational redshift, which changes the frequency of light near Earth, and the equivalence principle, which states that gravity and acceleration are indistinguishable.
The geodetic effect, which is the warping of spacetime by Earth's mass causing a shift in the gyroscope's spin axis, and frame-dragging, which is the dragging of spacetime caused by Earth's rotation leading to a different precession of the spin axis.
The Doppler effect, which affects the frequency of signals from the satellite, and the Coriolis effect, which influences the satellite's orbit due to Earth's rotation.
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SteveO1
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PHYSICS
General Relativity
Gravitational Lensing in Extreme Spacetimes
Visualizing the warping of light around black holes reveals the fabric of spacetime itself
18 Jan 2026
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What role do the Einstein field equations play in simulating extreme spacetime lensing?
They explain how light is emitted by black holes during lensing events.
They provide a quantum mechanical description of light particles near massive objects.
They describe how matter and energy curve spacetime, determining how light paths bend around massive objects.
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SteveO1
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PHYSICS
General Relativity
Gravitational Lensing in Extreme Spacetimes
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Visualizing the bending of light near black holes reveals the warping of spacetime itself
17 Jan 2026
Visualizing the bending of light near black holes reveals the warping of spacetime itself Simulating extreme spacetimes lensing involves modeling how light bends around massive objects with intense gravitational fields, such as black holes or...
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