User Andrew Palfreyman

8 votes

0 answers

163 views

How do we decode the image formed by a gravitational lens?

asked Apr 2, 2014 at 22:23

29 votes

9 answers

3k views

Why do we care about black hole interiors' physics?

asked Apr 10, 2013 at 19:24

0 votes

1 answer

70 views

Cosmological energy conservation

asked May 31, 2022 at 19:18

3 votes

3 answers

226 views

A foundational question about entanglement

asked Dec 11, 2012 at 20:13

0 votes

2 answers

77 views

Can energy modulate gravity so that an engine may be constructed?

asked Nov 5, 2018 at 21:29

22 votes

4 answers

3k views

Does a box containing photons have more inertia than an empty box?

asked May 11, 2016 at 18:46

4 votes

4 answers

1k views

What kind of energy gravitates, and why?

asked Dec 4, 2012 at 10:55

2 votes

1 answer

108 views

Rocket fuel consumption

asked Apr 12, 2018 at 16:47

2 votes

2 answers

784 views

Why does the Schwinger limit fail to predict the electron radius?

asked May 10, 2015 at 6:14

4 votes

1 answer

738 views

Can entanglement swapping be performed on already-entangled photons, and if so, can it preserve this entanglement over the swap?

asked Aug 24, 2012 at 11:07

3 votes

1 answer

113 views

Can we expect to relate the fundamental constants G and c?

asked Aug 3, 2016 at 16:25

4 votes

4 answers

3k views

The moving capacitor

asked Sep 15, 2013 at 22:59

7 votes

2 answers

2k views

Is Earth's orbit around the Sun affected by the ~8 minutes light delay?

asked Apr 28, 2013 at 16:58

3 votes

3 answers

748 views

The role of context in information theory

asked Dec 6, 2012 at 14:03

1 vote

1 answer

104 views

Can spin polarisation restrict the possible types of LHC proton-proton collisions?

asked Oct 21, 2015 at 3:10

8 votes

4 answers

857 views

Does radiation force depend on group velocity or on phase velocity?

asked Jun 17, 2015 at 23:24

5 votes

1 answer

125 views

Does ordinary refraction exert a couple on the refracting medium?

asked Apr 10, 2014 at 9:36

3 votes

3 answers

559 views

Relativistic beamed photon propulsion

asked Jan 31, 2015 at 0:01

2 votes

2 answers

446 views

Is the Hilbert-Felber model of repulsive gravity correct?

asked Apr 2, 2014 at 0:22

8 votes

1 answer

425 views

Negative radiation pressure from negative refractive index?

asked Apr 9, 2014 at 20:35

6 votes

2 answers

1k views

Why does the event horizon of a black hole not look like a bright sphere?

asked Jul 18, 2013 at 17:39

1 vote

1 answer

128 views

Can we build a synthetic event horizon?

asked May 18, 2013 at 21:34

2 votes

0 answers

177 views

The gravitational random walk

asked May 18, 2013 at 21:27

4 votes

1 answer

65 views

The weight of a cavity of radiation

asked May 2, 2013 at 8:12

3 votes

2 answers

978 views

Are the $10^{500}$ different string theories being whittled down?

asked Apr 11, 2013 at 10:58

3 votes

1 answer

259 views

Does spacetime have momentum?

asked Jan 29, 2013 at 22:38

15 votes

2 answers

3k views

Conjugate Variables, Noether's Theorem and QM

asked Dec 4, 2012 at 11:11

1 vote

2 answers

241 views

Can double entanglement preserve correlations?

asked Aug 27, 2012 at 4:43

Stack Exchange Network

28 Questions

How do we decode the image formed by a gravitational lens?

Why do we care about black hole interiors' physics?

Cosmological energy conservation

A foundational question about entanglement

Can energy modulate gravity so that an engine may be constructed?

Does a box containing photons have more inertia than an empty box?

What kind of energy gravitates, and why?

Rocket fuel consumption

Why does the Schwinger limit fail to predict the electron radius?

Can entanglement swapping be performed on already-entangled photons, and if so, can it preserve this entanglement over the swap?

Can we expect to relate the fundamental constants G and c?

The moving capacitor

Is Earth's orbit around the Sun affected by the ~8 minutes light delay?

The role of context in information theory

Can spin polarisation restrict the possible types of LHC proton-proton collisions?

Does radiation force depend on group velocity or on phase velocity?

Does ordinary refraction exert a couple on the refracting medium?

Relativistic beamed photon propulsion

Is the Hilbert-Felber model of repulsive gravity correct?

Negative radiation pressure from negative refractive index?

Why does the event horizon of a black hole not look like a bright sphere?

Can we build a synthetic event horizon?

The gravitational random walk

The weight of a cavity of radiation

Are the $10^{500}$ different string theories being whittled down?

Does spacetime have momentum?

Conjugate Variables, Noether's Theorem and QM

Can double entanglement preserve correlations?