User Frédéric Grosshans - Physics Stack Exchange

bio	website	ens-cachan.fr/…
	location	Paris, France
	age	37
visits	member for	2 years, 7 months
	seen	11 hours ago
stats	profile views	676

	5,485 reputation	bio	website	ens-cachan.fr/…	visits	member for	2 years, 7 months
1238 badges		location	Paris, France		seen	11 hours ago

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What software programs are used to draw physics diagrams, and what are their relative merits?

software

1d ago xenoclast 101

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60

votes

13

answers

6

kviews

Superluminal neutrinos

neutrino faster-than-light

apr 2 '12 at 12:58 Frédéric Grosshans 5,485

6

38

votes

2

answers

591

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Analog Hawking radiation

fluid-dynamics black-holes quantum-gravity research-level hawking-radiation

apr 30 at 23:33 Dario Alexander 176

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28

votes

13

answers

7

kviews

Home experiments to derive the speed of light?

electromagnetism measurement experimental-physics speed-of-light home-experiment

jul 23 '11 at 17:58 whoplisp 731

11

27

votes

10

answers

2

kviews

Mechanics around a rail tank wagon

mechanics fluid-dynamics

jan 30 '11 at 17:55 badp 105

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26

votes

8

answers

4

kviews

Why quantum entanglement is considered to be active link between particles?

quantum-mechanics quantum-information entanglement causality locality

apr 23 at 16:10 Bryan Sanctuary 3

15

26

votes

2

answers

3

kviews

What can the D-Wave quantum computer do?

quantum-information quantum-computation

sep 13 '11 at 3:34 Joe Fitzsimons 5,666

7

24

votes

3

answers

856

views

The Pioneer anomaly finally explained?

general-relativity astrophysics cosmology thermal-radiation

may 20 '12 at 17:09 Community♦ 1

6

22

votes

3

answers

877

views

Wind generators - why so few blades?

electricity fluid-dynamics renewable-energy

jul 12 '11 at 15:39 EnergyNumbers 2,411

3

22

votes

7

answers

383

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An entropy of the Wigner function

quantum-information entropy uncertainty-principle research-level

12h ago John 21

5

20

votes

6

answers

1

kviews

Rotation angle of a giant lily when a child crawls on its rim

classical-mechanics angular-momentum

feb 18 '11 at 18:09 ftiaronsem 397

5

19

votes

1

answer

681

views

What nonlinear deformations will a fast rotating planet exhibit?

astrophysics fluid-dynamics planets

jun 12 '11 at 11:02 Curious George 390

4

19

votes

4

answers

2

kviews

Why is the angle of the wake of a duck constant?

waves

oct 29 '11 at 21:33 Qmechanic♦ 18k

4

15

votes

2

answers

1

kviews

What happened to the idea of tachyonic or other superluminal neutrinos?

particle-physics special-relativity neutrino faster-than-light

nov 27 '11 at 1:23 Dr BDO Adams 242

7

15

votes

8

answers

2

kviews

How can anything ever fall into a black hole as seen from an outside observer?

general-relativity gravity black-holes observer event-horizon

jan 21 at 22:04 Tegiri Nenashi 138

7

15

votes

5

answers

1

kviews

Home experiments using wireless LAN or mobile phones about electromagnetism?

electromagnetism electromagnetic-radiation experimental-physics

dec 16 at 7:38 Ϛѓăʑɏ βµԂԃϔ 5,526

6

15

votes

4

answers

1

kviews

How do you calculate the anomalous precession of Mercury?

general-relativity astrophysics precession

nov 6 at 20:51 Colin McFaul 1,744

4

14

votes

3

answers

842

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Amplitude of an electromagnetic wave containing a single photon

quantum-mechanics energy electromagnetic-radiation waves photons

jun 3 at 19:42 Ben Crowell 7,960

4

13

votes

2

answers

407

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What does the sum of two qubits tell about their correlations?

research-level quantum-information correlation-function density-operator

apr 29 at 15:23 David Bar Moshe 7,865

5

13

votes

7

answers

1

kviews

What is a general definition of impedance?

optics waves terminology definition electrical-engineering

jan 14 at 17:59 Emilio Pisanty 7,485

4

13

votes

3

answers

1

kviews

Home experiment to estimate Avogadro's number?

thermodynamics statistical-mechanics home-experiment mole

apr 18 '11 at 21:08 Community♦ 1

11

12

votes

3

answers

1

kviews

How do you prove $S=-\sum p\ln p$?

thermodynamics statistical-mechanics entropy

nov 20 at 2:48 David Zaslavsky♦ 28.1k

2

12

votes

0

answers

215

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Bell polytopes with nontrivial symmetries

quantum-information bells-inequality

apr 12 '11 at 16:17 Marcin Kotowski 568

2

12

votes

1

answer

244

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Classical results proved using quantum mechanics

quantum-mechanics classical-mechanics

apr 12 at 2:11 Dan Piponi 788

8

11

votes

1

answer

854

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How many qubits are needed for useful computation?

computation quantum-computation

apr 30 '11 at 14:57 Alex 'qubeat' 541

4

11

votes

4

answers

431

views

What longest time ever was achieved at holding light in a closed volume?

optics light photons reflection

feb 27 '12 at 8:08 gigacyan 1,656

3

11

votes

2

answers

237

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Searching books and papers with equations

soft-question reference-request education books software

jan 24 '12 at 10:57 Qmechanic♦ 18k

4

11

votes

5

answers

705

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Is there such a thing as “Action at a distance”?

quantum-mechanics quantum-information entanglement faster-than-light causality

nov 17 at 16:24 Community♦ 1

4

11

votes

5

answers

802

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Double slit experiment near event horizon

quantum-mechanics black-holes double-slit-experiment interference

oct 20 '11 at 5:44 Vineet Menon 1,559

3

10

votes

5

answers

3

kviews

What is the world's biggest Schrodinger cat?

quantum-mechanics experimental-physics

jun 5 '12 at 8:33 ROGER 1

Frédéric Grosshans

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