# Tag Info

### Calculating temperature when it is lower than your thermometers can read?

The freezing point of water ethylene glycol mixtures depends in the concentration of ethylene glycol. You can find data for this on the Engineering Toolbox web site (a valuable source of all sorts of ...
• 351k
Accepted

### Why Curie temperature is bigger for smaller lattice in 2D Ising model

Why numerical simulation gives seemingly wrong result? The exact expression for $T_c$ is given by $$T_c=\frac{2J}{\ln\left(\sqrt{2}+1\right)}\approx 2.269\,J,$$ where we assume that $k_B=1$. This ...
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• 93.8k
1 vote

### Steam from a cup of coffee

The amount of water that air can take up before the water creates fog or visible steam depends on temperature. The colder the air, the less water it needs to create fog/steam. It is the same principle ...
• 377
1 vote

### Does electron have a temperature in the atom?

I have little to say about QCD, but I will try to analyse this question from thermodynamics perspective. And I think I have a decent answer. Save Time: In essence, protons and neutrons exhibit ...
• 49
1 vote

### Does electron have a temperature in the atom?

From the way the question was formulated, I deduce that some clarification on some basic concepts is needed. If we speak of electrons in an atom, we can safely ignore physics at much larger energy ...
1 vote

### Does electron have a temperature in the atom?

There is technically a way to incorporate the concept you are trying to talk about; I gave you an upvote to undo the downvotes you are getting on this question. There is a reason why there is a ...
1 vote

### Do there exist materials whose Opacity varies with temperature?

There are certainly materials which change colour with temperature. This behaviour is called thermochromism.
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1 vote

### How does a blackbody heat up if it emits all radiation that it absorbs?

it emits all the radiation that it absorbs by definition? This is not the correct definition of a black body. The Wikipedia definition of a black body says: A black body or blackbody is an idealized ...
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1 vote

### How does a blackbody heat up if it emits all radiation that it absorbs?

A blackbody is in thermodynamic equilibrium. It is not getting hotter or colder. Having realised this, then it is more straightforward to understand why a true blackbody emits as much radiation as it ...
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