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.
Graduate Confusion about Lorentz Transform
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Good books on both Relativities
  • · Replies 29 ·
Replies
29
Views
4K
Graduate Schwarzchild radial coordinate
  • · Replies 13 ·
Replies
13
Views
3K
Graduate EFE Solutions: Kerr, Mass, Energy, Metric Tensor
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Equivalence Principle: Questions Explained
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is There a Connection Between Movement Through Space-time and Aging?
  • · Replies 50 ·
2
Replies
50
Views
14K
Graduate On Einstein´s theory of curved spacetime.
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Local flatness for non-freely falling observers?
  • · Replies 40 ·
2
Replies
40
Views
7K
Graduate Time Dilation Problem: Help Solve Light Beam Issue
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Time Dilation Equation: Clarifying Variables
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Uncovering the Mystery of Hidden Momentum in E&M
  • · Replies 13 ·
Replies
13
Views
8K
Graduate Classic or General Relativity: Photon in Gravitational Field
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Time-dialation and light clock
  • · Replies 3 ·
Replies
3
Views
2K
High School Do we live in 3 or 4 dimensions?
  • · Replies 71 ·
3
Replies
71
Views
40K
Graduate What are the equations for a massless particle's worldline?
  • · Replies 15 ·
Replies
15
Views
3K
What do black holes look like?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Confirm: Smooth Twin Paradox Intuition
  • · Replies 40 ·
2
Replies
40
Views
5K
Graduate Ehrenfest's Paradox: Resolving the Kinematical Solution
  • · Replies 36 ·
2
Replies
36
Views
8K
Graduate 3 questions regarding velocity and the speed of light
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Unraveling the Implications of Simultaneity in Special Relativity
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Photon frequency in different inertial frames
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Interpret Relativistic Momentum: Facts & Popular Opinion
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Is gravity a force, or the curvature of space?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate What are closed time-like curves and how are they related to General Relativity?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Is Speed an Illusion in Physics?
  • · Replies 12 ·
Replies
12
Views
4K
Graduate Is Time Slowing or Are Processes Slowing Near High Gravity and Speeds?
  • · Replies 137 ·
5
Replies
137
Views
19K
Undergrad Question Regarding Perception of Time
  • · Replies 11 ·
Replies
11
Views
3K
Graduate How do we know space and time are related?
  • · Replies 20 ·
Replies
20
Views
4K
Graduate Relative Velocity: Jack & Particle - v to V
  • · Replies 7 ·
Replies
7
Views
2K
High School Gravity at Earth's Center: Does Weightlessness Follow?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Ricci tensor of the orthogonal space
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Can time be stopped in special relativity?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Definition of isometry in components form
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Reference frames, reference particles, coordinate systems and all that
  • · Replies 18 ·
Replies
18
Views
4K
Graduate Photon Mass and Momentum: Train Experiment
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Gravitation in General Relativity.
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Einstein notion of time and the oscillation of the cesium atom
  • · Replies 99 ·
4
Replies
99
Views
12K
Graduate Local Lorentz Frames: Definition & Context for GR
  • · Replies 47 ·
2
Replies
47
Views
7K
Graduate Does Special Relativity Predict Zero Acceleration in Free Fall?
  • · Replies 177 ·
6
Replies
177
Views
25K
Graduate Outrunning Light; how quickly will light catch up with you
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Events in Relativity: Can Simultaneous Occurrences Exist?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Minkowski diagram, what does observer see.
  • · Replies 26 ·
Replies
26
Views
4K
Graduate Curvature of Spacetime: Is the Universe Flat or Curved?
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Thomas Precession, Angular Momentum, and Rotating Reference Frames
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Father-Son Paradox: Explaining Time Dilation
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Can we truly understand motion through spacetime?
  • · Replies 18 ·
Replies
18
Views
3K
Graduate Any in depth explanations on why near lightspeed affect aging?
  • · Replies 21 ·
Replies
21
Views
4K
Graduate Is there always the same amount of spacetime curvature in the uni.?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Gravity is different - infinite energy stored
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Partitioning Mass in GR: A Cautionary Tale
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad What keeps the planets in orbit
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Gravity exerted by a fast moving object versus stationary object?
  • · Replies 61 ·
3
Replies
61
Views
18K
Graduate Lorentz transformation matrix applied to EM field tensor
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Geometric Description of Free EM Field
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Timelike Killing vector field and stationary spacetime
  • · Replies 21 ·
Replies
21
Views
7K
Graduate E=MC^2 Mass and Energy, synonymous?
  • · Replies 79 ·
3
Replies
79
Views
11K
Graduate Why do we move at the speed of light?
  • · Replies 41 ·
2
Replies
41
Views
7K
Graduate Is there really no answer to what gravity is?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Need Intuition Behind Expansion of Smaller Structures in the Universe
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Wrong signs Ricci tensor components RW metric tric
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is the Speed of Light Tied to the Plank Distance and Time?
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Energy left of body falling down to Schwarzschild radius
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Spherically symmetric spacetime
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Why there is a minus sign in the Killing's equation
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Special Relativity, four-momenta questions.
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Seeking clarification on red-shift
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Help with time-space diagram equations.
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why things like relativity and evolution aren't called laws?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Understanding Proper Time Concept in Relativity: Clock Readings and Observers
  • · Replies 15 ·
Replies
15
Views
4K
Graduate Deriving Invariant Distance in Space Time: Pythagorean Theorem
  • · Replies 27 ·
Replies
27
Views
9K
Graduate Are classical models of electrons with spin limited by the speed of light?
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Does the law of universal gravity exist?
  • · Replies 16 ·
Replies
16
Views
3K
Graduate Question about spacetime curvature
  • · Replies 20 ·
Replies
20
Views
3K
Graduate Are all objects crossing the event horizon travelling at C?
  • · Replies 28 ·
Replies
28
Views
5K
Graduate How many independent components are there in the Einstein equations?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Velocity & Gamma Factor of Proton
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why Don't Earth and the Moon Emit Gravity Waves Like Neutron Stars?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Is there a minimum mass for black holes?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Time Dilation Video Feed Experiment
  • · Replies 5 ·
Replies
5
Views
2K
Graduate A perfectly flat bucket of water?
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Can Affine Parameters Be Used to Describe Null Curves in GR?
  • · Replies 7 ·
Replies
7
Views
10K
Graduate The Modern Geometric View of Black Holes
  • · Replies 16 ·
Replies
16
Views
4K
Undergrad Confused on how to calculate invariant interval.
  • · Replies 17 ·
Replies
17
Views
5K
Graduate What is Minkowski Space and Its Role in Understanding Relativity?
  • · Replies 28 ·
Replies
28
Views
6K
Undergrad Why measuring one-way trip impossible?
  • · Replies 43 ·
2
Replies
43
Views
5K
Graduate Does Velocity or Acceleration Determine the Energy of a Moving Object?
  • · Replies 63 ·
3
Replies
63
Views
6K
Graduate Question about value of the metric tensor and field strength
  • · Replies 3 ·
Replies
3
Views
3K
Graduate What Ingredients Can Make an Observer?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is the Cosmic Microwave Background an Absolute Frame of Reference?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Is spacetime independent of its universe?
  • · Replies 73 ·
3
Replies
73
Views
9K
Graduate Time Dilation Thought Experiment
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Is a Universal Clock Possible? Answers Here
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Speed of light and relations to mass
  • · Replies 5 ·
Replies
5
Views
2K
Graduate What math do you need to know to solve EFE
  • · Replies 4 ·
Replies
4
Views
1K
Graduate When is something Lorentz invariant.
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Anisotropic instead of isotropic metric deriving acceleration
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Understanding Classical Fields in General Relativity
  • · Replies 16 ·
Replies
16
Views
3K
Graduate The Arc of Space Curvature: Large and Small
  • · Replies 30 ·
2
Replies
30
Views
4K
Graduate Understanding the Minkowski Metric: Explained Step-by-Step for Beginners
  • · Replies 36 ·
2
Replies
36
Views
8K
Graduate Energy shift in a photon passing by a gravitational well
  • · Replies 12 ·
Replies
12
Views
3K