User HDE

84 votes

8 answers

28k views

Why is information indestructible?

asked May 29, 2012 at 16:34

18 votes

2 answers

2k views

Can a non-Euclidean space be descripted through an Euclidean space of higher dimension? So why use non-Euclidean?

asked Apr 20, 2011 at 19:02

14 votes

5 answers

13k views

What is "pure energy" in matter-antimatter annihilation made of?

asked May 11, 2011 at 14:54

14 votes

1 answer

547 views

How are neutrino beams emitted at CERN?

asked Sep 23, 2011 at 16:14

13 votes

1 answer

449 views

Why are all-Sky images drawn as a filled ellipse?

asked Mar 3, 2011 at 13:07

12 votes

6 answers

2k views

A die versus a quantum experiment

asked Feb 23, 2011 at 13:15

12 votes

3 answers

563 views

Does no-cloning theorem implies a no-comparison theorem?

asked Mar 8, 2012 at 18:51

11 votes

3 answers

11k views

Gravitational time dilation at the earth's center

asked May 19, 2011 at 15:10

11 votes

3 answers

3k views

How to tell if QM is really random?

asked Apr 4, 2011 at 16:03

6 votes

1 answer

3k views

The Coriolis force bending a railway

asked Feb 22, 2011 at 23:37

6 votes

3 answers

18k views

Why it is said that Universe is an isolated system?

asked Jun 29, 2011 at 4:14

6 votes

3 answers

310 views

Vibrating string as a dynamic system

asked Mar 4, 2019 at 12:10

5 votes

3 answers

661 views

Temperature of a gas (assumptions about the particle speeds)

asked Oct 24, 2012 at 18:18

5 votes

4 answers

7k views

Low frequency electromagnetic waves

asked Mar 5, 2011 at 18:02

4 votes

3 answers

437 views

It is possible to extract energy from black holes or..satellites?

asked Feb 27, 2011 at 0:46

4 votes

1 answer

241 views

Gamma Ray Bubble at the center of our galaxy seen by Fermi Telescope

asked Mar 3, 2011 at 12:47

4 votes

6 answers

1k views

what are dimensions?

asked Feb 15, 2011 at 18:20

4 votes

1 answer

2k views

Voyager local time dilation (caused by gravity)

asked May 16, 2011 at 18:25

4 votes

3 answers

1k views

How could a particle be isolated to avoid decoherence?

asked Jun 29, 2011 at 4:20

3 votes

1 answer

2k views

Universe Expansion as an absolute time reference

asked May 26, 2011 at 1:54

3 votes

2 answers

730 views

Kinetic energy puzzle

asked Oct 17, 2011 at 18:02

3 votes

3 answers

925 views

Is energy exchange quantized?

asked Apr 14, 2011 at 13:09

2 votes

4 answers

877 views

Are electromagnetic "plane" waves measurable or just a virtual concept?

asked Apr 5, 2011 at 15:12

2 votes

1 answer

341 views

What happend with the light from all the galaxies visibles from an earth telescope?

asked Feb 14, 2011 at 18:49

2 votes

1 answer

233 views

Spacetime assumptions at OPERA

asked Sep 29, 2011 at 14:59

2 votes

3 answers

301 views

Is there a single metric for a given system?

asked Sep 9, 2011 at 16:20

2 votes

2 answers

960 views

The quantum state can be interpreted statistically, again

asked Feb 8, 2012 at 18:54

1 vote

2 answers

566 views

Nuclear decay rate affected by sun and quantum randomness

asked Jun 13, 2011 at 15:16

1 vote

2 answers

489 views

Restrictions on defining microstates (Entropy)

asked Jul 4, 2011 at 15:31

1 vote

1 answer

282 views

The energy carried from one winding of a transformer to another, in quantum terms

asked Sep 9, 2011 at 14:42

Stack Exchange Network

42 Questions

Why is information indestructible?

Can a non-Euclidean space be descripted through an Euclidean space of higher dimension? So why use non-Euclidean?

What is "pure energy" in matter-antimatter annihilation made of?

How are neutrino beams emitted at CERN?

Why are all-Sky images drawn as a filled ellipse?

A die versus a quantum experiment

Does no-cloning theorem implies a no-comparison theorem?

Gravitational time dilation at the earth's center

How to tell if QM is really random?

The Coriolis force bending a railway

Why it is said that Universe is an isolated system?

Vibrating string as a dynamic system

Temperature of a gas (assumptions about the particle speeds)

Low frequency electromagnetic waves

It is possible to extract energy from black holes or..satellites?

Gamma Ray Bubble at the center of our galaxy seen by Fermi Telescope

what are dimensions?

Voyager local time dilation (caused by gravity)

How could a particle be isolated to avoid decoherence?

Universe Expansion as an absolute time reference

Kinetic energy puzzle

Is energy exchange quantized?

Are electromagnetic "plane" waves measurable or just a virtual concept?

What happend with the light from all the galaxies visibles from an earth telescope?

Spacetime assumptions at OPERA

Is there a single metric for a given system?

The quantum state can be interpreted statistically, again

Nuclear decay rate affected by sun and quantum randomness

Restrictions on defining microstates (Entropy)

The energy carried from one winding of a transformer to another, in quantum terms