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Question 1

16votes

4answers

2kviews

Condensation of water droplets on one side of a bottle!

Here is what I observed:Background:I kept this bottle in my room, at a place where:half of it was in complete darkness (well, minimal light did fall on it, but very minimal).the other half ...

Lifeispeaceful

161

asked2 days ago

Question 2

1vote

2answers

128views

What is the mechanism behind the Curie point in ferromagnets?

I just finished up a uni course on magnetism, which mostly made sense, but I've been left with some questions about ferromagnetic behaviour; in particular, I'm not satisfied with my lecturer's ...

Charlie P

13

askedNov 13 at 23:58

Question 3

-2votes

2answers

102views

Is salt/ice mix wierd? [closed]

I know that many countries use salt for de-icing roads because salt makes ice melt faster (as per my textbook).I also know that salt is used in freezing mixture for keeping something at freezing ...

Thedha

19

askedNov 11 at 12:19

Question 4

1vote

1answer

62views

Fragile complex systems

Are there known complex systems that exhibit fragility in the sense that small perturbations — either in the local interaction rules between particles (or agents), or in the surrounding environment — ...

megaproba

151

askedNov 7 at 14:13

Question 5

-1votes

0answers

176views

Is the geometric derivation of computational threshold $λ_c = 1/√2$ from Schmidt circle topology mathematically sound?

I'm investigating whether quantum state manifold geometry predicts computational transitions in quantum systems. Starting from the Schmidt decomposition of bipartite pure states:|Ψ⟩ = λ₁|s₁⟩⊗|e₁⟩ + λ₂...

Dan Beiser

15

askedNov 4 at 14:18

Question 6

1vote

1answer

94views

Can the cooling performance of ice be enhanced by freezing it at different pressure?

If I freeze water below atmospheric pressure, could this result in ice that when put into say a drink, will absorb energy faster, than if it was frozen normaly?

ikosk

11

askedAug 16 at 9:59

Question 7

2votes

1answer

121views

“How can latent energy be harnessed by slowing phase transitions under pressure?”

I’ve been watching water approach its freezing point and noticed a brief “point between” liquid and solid. A small catalyst can make this moment predictable, and if the water is encapsulated under ...

Chris Searby

21

askedAug 16 at 7:13

Question 8

9votes

1answer

307views

Do we have good general models for solid-liquid phase transitions?

When reading about phase transitions, one quickly encounters the Ising model and its variants (spin glass, Potts, etc.).This model is used to explain ferromagnetism in a very satisfying way. It is ...

Weier

354

askedAug 3 at 9:55

Question 9

0votes

1answer

158views

Which pressure to use in phase diagrams? [duplicate]

I was reading up on phase diagrams and this line on Wikipedia struck me. It says that:“The pressure on a pressure-temperature diagram (such as the water phase diagram shown above) is the partial ...

Scooby329

69

askedJul 29 at 17:44

Question 10

0votes

1answer

84views

Reconciling the Stefan model and Stefan-Boltzmann

Suppose I want to estimate how long it would take to melt a block of ice on the sun, ie: a one dimensional surface of thickness $h$ in contact with an infinite liquid heat reservoir, both at constant ...

Adam Wang

169

askedJul 18 at 15:30

Question 11

0votes

0answers

89views

Which pressure should I consider during phase transition?

Suppose I have a vessel and inside of it water, saturated vapor and air. Partial pressures are $P_\text{vapor}$ and $P_{air}$. Suppose the temperature changes by $dT$ and the pressure changes by $dP$ ...

Kyajo

51

askedJul 5 at 21:10

Question 12

5votes

1answer

199views

What bounds on the possible values of critical exponents can we derive from first principles?

Consider some many-body Hamiltonian $H$- let's say classical for simplicity, e.g. the Ising model - that is parameterized by some "external" parameters $\{h_i\}$, e.g. pressure or applied ...

tparker

52.3k

askedJul 5 at 19:01

Question 13

1vote

1answer

140views

Can the critical exponent $\alpha$ be greater than or equal to 1?

The critical exponent $\alpha$ describes the (non-analytic part of the) behavior of the specific heat capacity $C$ as a function of temperature near a continuous thermal phase transition: $C \sim |T - ...

tparker

52.3k

askedJul 4 at 20:17

Question 14

3votes

0answers

64views

Fluctuations at the critical point: can they reach centimeter scales?

In the wikipedia article on critical opalescence, the following claim appears:As the density fluctuations become of a size comparable to the wavelength of light, the light is scattered and causes ...

Plemath

272

askedJun 26 at 17:15

Question 15

0votes

0answers

67views

Visibility of extremal Gibbs states / degenerate vacua in CFT?

Consider a lattice model with a continuous transition involving spontaneous symmetry breaking (SSB) $G\to H$. Near criticality, the system is typically described by a QFT which is conformal (CFT) at ...

Shankar

124

askedJun 24 at 20:25

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Stack Exchange Network

Questions tagged [phase-transition]

Condensation of water droplets on one side of a bottle!

What is the mechanism behind the Curie point in ferromagnets?

Is salt/ice mix wierd? [closed]

Fragile complex systems

Is the geometric derivation of computational threshold $λ_c = 1/√2$ from Schmidt circle topology mathematically sound?

Can the cooling performance of ice be enhanced by freezing it at different pressure?

“How can latent energy be harnessed by slowing phase transitions under pressure?”

Do we have good general models for solid-liquid phase transitions?

Which pressure to use in phase diagrams? [duplicate]

Reconciling the Stefan model and Stefan-Boltzmann

Which pressure should I consider during phase transition?

What bounds on the possible values of critical exponents can we derive from first principles?

Can the critical exponent $\alpha$ be greater than or equal to 1?

Fluctuations at the critical point: can they reach centimeter scales?

Visibility of extremal Gibbs states / degenerate vacua in CFT?

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