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Quotefrom: alancalverd on Yesterday at 20:31:28That's true by definition.
Heat (i.e.thermal energy) can only flow from a higher to a lower temperature.
My point was that Entropy is the log of something. The log of something has no units.
No, it was the release of Wigner potential energy that raised the temperature. Problem is that once you reach the annealing temperature you can initiate a chain reaction that outstrips the cooling capacity of the system - as happened at Windscale.It's an odd use of "degree of freedom". Wigner energy is potential energy stored as microscopic areas of mechanical stress when a neutron displaces an atom from its lattice position into a metastable trap. Wigner release is the conversion of that potential energy into phonons (i.e. heat) as the atom returns to a stable position. It's the "whole atom" equivalent of thermoluminescent electron trapping resulting from gamma radiation.
So, what happened was the transfer from one particular degree of freedom to all the others.
In July 2016, the French government considered a ban on both the Gitanes and Gauloises cigarette brands because they were deemed "too stylish and cool".which is why I smoked them in my cool, stylish youth. But since the UK government has banned smoking in indoor public spaces, I have to rely on aviator shades and a 32-bar bass solo to pull the chicks.
"The potential energy of a strained lattice may be enormous"No, it was the release of Wigner potential energy that raised the temperature. Problem is that once you reach the annealing temperature you can initiate a chain reaction that outstrips the cooling capacity of the system - as happened at Windscale.
yes, it was the cause of the Windscale fire- it made the graphite very hot...
If you had a liquid of similar density but high vapor pressure, the barometer would be more sensitive to temperature. Not a problem for a laboratory instrument where you can apply any number of corrections but an additional complication at sea.The reason mercury was so useful in barometers stems from its low vapor pressure at room temperatureAnd there was me thinking it was the density..
Presumably all the ten metre high barometers full of water somehow escaped my attention.
The water vapour pressure is a complication, but you could allow for it.
This is why temperature is in units of energy.No. The mean energy of a particle within a body is kBT where kB is the Boltzmann constant, whose dimensions are joules per kelvin.
Entropy is dimensionless.No. The dimensions of entropy are joules per kelvin.
So if T>0, by ST's statement there is plenty of available energy in the system to change its entropy, and nothing to stop it.The gradient is d height/ d distance .Temperature is the amount of energy required to change the entropy by one bit.So the entropy of an object at constant temperature is continually changing? Welcome to the world of Hamdani Yusuf!
That doesn't mean that all hills are moving.
That's not H Y's world, nor S T's world.
It's only in your world.
It's any form of energy.Er, no. The potential energy of a strained lattice may be enormous, but as that can't be transferred by thermal conduction to another body, it doesn't affect its temperature.
It only shows that average temperature of an object (ice-water mixture) can be different than local temperature at specific locationAn average being different from a sample? My god, he's invented statistics! There's a Nobel physics prize awaiting if you can demonstrate it, and Fields Medal if you can present a mathematical proof. Or maybe not.