User Retarded Potential

58 votes

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How does faster than light travel violate causality?

answered Feb 17, 2013 at 21:55

19 votes

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What is the exact gravitational force between two masses including relativistic effects?

answered Dec 29, 2012 at 20:27

7 votes

Does the "Andromeda Paradox" (Rietdijk–Putnam-Penrose) imply a completely deterministic universe?

answered Jan 17, 2013 at 3:36

7 votes

What is a clock?

answered Feb 21, 2013 at 23:00

5 votes

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Setting up a local-coordinate system in space-time using only a single clock and light beams

answered Feb 1, 2013 at 20:13

5 votes

Does the mathematics of physics require impure set theory?

answered Jan 5, 2013 at 21:19

4 votes

Why do clocks measure arc-length?

answered Feb 7, 2013 at 21:50

4 votes

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What happens to this potential energy?

answered Mar 13, 2013 at 1:21

3 votes

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Computability of physics

answered Mar 13, 2013 at 22:08

3 votes

Double slit experiments - basic pondering

answered Mar 20, 2013 at 20:43

3 votes

If time slows down when you move faster, does this give you an "effective speed" different from your proper speed?

answered Feb 14, 2013 at 18:19

3 votes

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Relaxation time for deviations from spherical shape of a black hole's event horizon (and waves)

answered Feb 5, 2013 at 21:53

3 votes

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Surface integral of Poynting vector around static sources

answered Feb 16, 2013 at 18:55

3 votes

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Are the intersections of past and future light cones spacelike?

answered Nov 23, 2012 at 0:01

3 votes

Is equivalent resistance always lower if we add a resistor to a passive electronic circuit?

answered Dec 13, 2012 at 21:23

2 votes

List of physics paradoxes

answered Jan 14, 2013 at 22:42

2 votes

Where inside a large uniformly dense, symmetrical sphere would its gravity toward the center be the strongest?

answered Jan 21, 2013 at 20:04

1 vote

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Why is there no aberation of a static electric field, but there is aberation for EM radiation?

answered Feb 1, 2013 at 23:46

1 vote

origin of magnetic field in a permanent magnet

answered Feb 14, 2013 at 20:31

1 vote

Gravity from a singularity as distance approaches zero

answered Jan 15, 2013 at 17:51

1 vote

Gravitation force- Attraction and repulsion

answered Dec 24, 2012 at 2:50

1 vote

Changing the Half-Life of Radioactive Substances

answered Dec 29, 2012 at 19:21

1 vote

Questions about the speed of light and the extent of the universe

answered Dec 11, 2012 at 7:17

1 vote

Metric to describe an expanding spacetime from coordinates reflecting the perspective of a local observer

answered Oct 4, 2016 at 22:09

1 vote

Modeling a two-mass, spring, damper system

answered Mar 8, 2013 at 21:22

0 votes

The Four-Clock Special Relativity Conundrum

answered Jan 4, 2013 at 23:12

Stack Exchange Network

26 Answers

How does faster than light travel violate causality?

What is the exact gravitational force between two masses including relativistic effects?

Does the "Andromeda Paradox" (Rietdijk–Putnam-Penrose) imply a completely deterministic universe?

What is a clock?

Setting up a local-coordinate system in space-time using only a single clock and light beams

Does the mathematics of physics require impure set theory?

Why do clocks measure arc-length?

What happens to this potential energy?

Computability of physics

Double slit experiments - basic pondering

If time slows down when you move faster, does this give you an "effective speed" different from your proper speed?

Relaxation time for deviations from spherical shape of a black hole's event horizon (and waves)

Surface integral of Poynting vector around static sources

Are the intersections of past and future light cones spacelike?

Is equivalent resistance always lower if we add a resistor to a passive electronic circuit?

List of physics paradoxes

Where inside a large uniformly dense, symmetrical sphere would its gravity toward the center be the strongest?

Why is there no aberation of a static electric field, but there is aberation for EM radiation?

origin of magnetic field in a permanent magnet

Gravity from a singularity as distance approaches zero

Gravitation force- Attraction and repulsion

Changing the Half-Life of Radioactive Substances

Questions about the speed of light and the extent of the universe

Metric to describe an expanding spacetime from coordinates reflecting the perspective of a local observer

Modeling a two-mass, spring, damper system

The Four-Clock Special Relativity Conundrum