Special and General Relativity Forum

Post thread
Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
Undergrad Aberration of light in classical and relatvistical cases
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Are gravitational effects instantaneous?
  • · Replies 20 ·
Replies
20
Views
6K
Undergrad Why force due to gravity or gravitation cannot be measured.
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Kinetic Energy approximation both Einstein's and Newton's
  • · Replies 8 ·
Replies
8
Views
9K
Undergrad Speed of two spaceships relative to each other observed by an earth observer
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Is the Milky Way galactic blackhole slowly sucking us in?
  • · Replies 3 ·
Replies
3
Views
5K
Undergrad Why does time slow down the faster you go?
  • · Replies 98 ·
4
Replies
98
Views
20K
Undergrad E=mc^2, but nothing can travel faster than light?
  • · Replies 6 ·
Replies
6
Views
7K
Undergrad Understanding the Relationship Between Gravity and Light
  • · Replies 49 ·
2
Replies
49
Views
21K
Undergrad At what speed would one day = one year?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad What if something went faster than light?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad How does speed affect time in Einstein's theory of relativity?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Observing and Experiencing Speed of Light
  • · Replies 14 ·
Replies
14
Views
4K
Undergrad How would Earth's time slow down?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Why light is remains massless even if travelling w/ the fastest velocity?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Does Moving Train See Stationary Observer at .6c? - I'm Not Sure
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Mass increasing as velocity approaches c
  • · Replies 8 ·
Replies
8
Views
5K
Undergrad Does Relativity Theory Explain Why Racing Drivers Age Slower?
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad How is relativity theory applied to gps?
  • · Replies 8 ·
Replies
8
Views
5K
Undergrad How did light speed become the governor of relativity?
  • · Replies 31 ·
2
Replies
31
Views
6K
Undergrad Why Is Light Speed a Limit for Spacecraft?
  • · Replies 11 ·
Replies
11
Views
5K
Undergrad I have a question for the masses. if you were traveling at 60 mph
  • · Replies 20 ·
Replies
20
Views
5K
Undergrad Can a human travel to distant stars? And other questions.
  • · Replies 24 ·
Replies
24
Views
5K
Undergrad Why cant an object travel faster than the speed of light?
  • · Replies 13 ·
Replies
13
Views
5K
Undergrad Measuring Distance to a Star One Light Year Away at 0.5c Speed
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Time Dilation - Relative to Light Speed or Reference Point - I'm Confused?
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Is it Possible for A to See B Moving Faster?
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Michelson-Morley experiment doubts
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Newton's Second Law: Acceleration Proportional to Force
  • · Replies 20 ·
Replies
20
Views
4K
Undergrad Relativity: Impossible Scenario?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Speed of light and time dilation
  • · Replies 18 ·
Replies
18
Views
5K
Undergrad Needing a basic clarification with SR
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Einstein's relativity proves caloric theory?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Why doesn't light get absorbed?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Do Photons Have Mass and Momentum?
  • · Replies 170 ·
6
Replies
170
Views
25K
Undergrad What does time mean at t=1/infinity?
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Does Traveling Affect Age? A Thought Experiment
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Potential energy contributes more to gravity
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad Verifying Time Dilation, Length Contraction & Space-Time Curvature
  • · Replies 27 ·
Replies
27
Views
5K
Undergrad Energy of photon never becomes zero
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Can the change in energy change the mass?
  • · Replies 13 ·
Replies
13
Views
4K
Undergrad Does Earth's Rotation and Revolution Affect Time and Speed?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Combining SR and the Broglie Wavelength equations: Are they cumulative?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why is light speed constant in all reference frames?
  • · Replies 39 ·
2
Replies
39
Views
26K
Undergrad Help understanding a SR equation
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Beginner question about special relativity
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Black hole matter accumulation
  • · Replies 284 ·
10
Replies
284
Views
35K
Undergrad Earth's orbit and relative speed/time
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Need quick answer on spatial dimensions
  • · Replies 23 ·
Replies
23
Views
4K
Undergrad The relationship between light, energy and relativity
  • · Replies 9 ·
Replies
9
Views
6K
Undergrad Someone moving near c to an observer?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Two lightnings that happen at the same time, a train and a passanger
  • · Replies 42 ·
2
Replies
42
Views
7K
Undergrad Simple realtivity: Length contraction
  • · Replies 27 ·
Replies
27
Views
6K
Undergrad 2 objects travailing in opposite directions?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Is EVERYTHING affected by gravity?
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Does Earth's Rotation Affect Distance for Light to Travel? | Explained
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Light Clock Example this is not HW
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad Could Non-Linear Length Contraction Resolve Relativity Paradoxes?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad What are the Requirements for Time to be Considered a Vector?
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Question on Michelson Morley experiment and length contraction
  • · Replies 65 ·
3
Replies
65
Views
11K
Undergrad Question about the rotating disk
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad Is There a Scientific Consensus on the Connection Between Inertia and Gravity?
  • · Replies 8 ·
Replies
8
Views
5K
Undergrad What is the energy of a photon in relation to E=MC^2?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Speed of light and time travel
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Is Special theory of relativity only about speed of light?
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad How do Maxwell's equations indicate that the speed of light is constant?
  • · Replies 11 ·
Replies
11
Views
27K
Undergrad Speed of light last value accepted 1983
  • · Replies 13 ·
Replies
13
Views
5K
Undergrad If two spaceships are moving toward each other at the 0,9c
  • · Replies 4 ·
Replies
4
Views
9K
Undergrad Time with no gravitational force
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad If light has no weight, how can it push objects?
  • · Replies 68 ·
3
Replies
68
Views
32K
Undergrad Why does the rest mass of an object increase when it's in motion?
  • · Replies 8 ·
Replies
8
Views
9K
Undergrad Self-learning special relativity
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Relations between kinetic energy, momentum and velocity
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Regarding constancy of speed of light
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Is the speed of light any faster in low density space than in high
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad Time Dilation: Impact on GPS Accuracy
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Does E=mc2 Work with Different Metric Systems?
  • · Replies 8 ·
Replies
8
Views
8K
Undergrad A Bus travelling at a very high speed.
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Classic and Relativity Kinetic Energy
  • · Replies 16 ·
Replies
16
Views
15K
Undergrad Gravitational waves predicted by Einstein
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How Does Time Dilation Explain the Twin Paradox?
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad How Do High Velocity Objects Influence Time Dilation?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Time Dilation and the Flawed World Record Attempt: A Physics Explanation
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Really confused - basic special relativity
  • · Replies 44 ·
2
Replies
44
Views
7K
Undergrad Some exercises on relativistic doppler shift?
  • · Replies 5 ·
Replies
5
Views
4K
Undergrad Question about simple linear accelerator
  • · Replies 13 ·
Replies
13
Views
4K
Undergrad N-body problem simulation and relativity
  • · Replies 14 ·
Replies
14
Views
7K
Undergrad Does Light Still Travel at c Above .9c?
  • · Replies 22 ·
Replies
22
Views
4K
Undergrad Time dilation, mirror question
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Why can't we time travel in backward?
  • · Replies 25 ·
Replies
25
Views
7K
Undergrad Gravity and other fundamental forces
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Relative Velocity: How Newton & Einstein Used Light Speed
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Two Balls in Space: An Observer's Perspective
  • · Replies 27 ·
Replies
27
Views
5K
Undergrad Understanding Einstein's E=mc^2 Theory
  • · Replies 21 ·
Replies
21
Views
5K
Undergrad Gravitational Force on a Body: Is it Absolute?
  • · Replies 5 ·
Replies
5
Views
4K
Undergrad Black Hole Gravity: Mass vs Distance
  • · Replies 28 ·
Replies
28
Views
20K
Undergrad Relativistic Momentum Help With Equation Reduction
  • · Replies 6 ·
Replies
6
Views
5K
Undergrad Check My Relativity Video for an Engineer | Answer His Question on Light's Speed
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Calculating Solution to Sketch: Help Needed
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Magnetism to test for movement?
  • · Replies 9 ·
Replies
9
Views
3K