irreversible process
Let an agent explain irreversible processes, relay the second law, entropy production and examples from thermodynamics sources, describe Joule expansion and flag the misfiled cryonics alias with its debate attributed, and distinguish irreversible processes from reversible and quasi-static processes, time-reversal symmetry in microscopic laws and everyday irreversibility such as damage.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain irreversible processes, relay the second law, entropy production and examples from thermodynamics sources, describe Joule expansion and flag the misfiled cryonics alias with its debate attributed, and distinguish irreversible processes from reversible and quasi-static processes, time-reversal symmetry in microscopic laws and everyday irreversibility such as damage.
A thermodynamic process that cannot be reversed without leaving changes in the surroundings, producing entropy in accordance with the second law of thermodynamics, as in all real processes involving friction, heat transfer across finite temperature differences, mixing, chemical reactions and free expansion, such as Joule expansion of a gas into a vacuum; reversible processes are idealisations. The registry alias information-theoretic death names a concept from cryonics debates about when brain information is irrecoverably lost, a loose analogy rather than a thermodynamic process, and appears misfiled.
What it is for: Describing real processes that produce entropy.
It can be explain the second law and entropy production; relay examples; describe Joule expansion; flag misfiled aliases.
Distinguishing features
Entropy production
Real-world processes
Direction of time
Dissipation
What it looks like
Not a physical object; seen in heat flow, friction, mixing and expansion.
Physical character
second law: entropy of isolated systems does not decrease note
Joule expansion experiment: 1845 year - James Joule
Clausius inequality: 1850s-1865 note
How it is recognised
Entropy-producing process
Information-theoretic death, Joule expansion, free expansion
Reversible processes are ideal limits; quasi-static processes are slow; microscopic laws are time-symmetric; everyday damage is a loose sense
Related models
is a kind of - in registry terms
produces -
includes -
is contrasted with -
In practice
Families and kinds
frictional processes
heat transfer across temperature differences
mixing and diffusion
free expansion
chemical reactions away from equilibrium
Standards and regulation
No regulation
Failure modes and hazards
Treating idealised reversible processes as real
Misfiled cryonics alias
Confusing thermodynamic and everyday irreversibility
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.irreversible-process
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What an irreversible process is.
Science.
Definition
Definition.
Definition
Definition.
- What is an irreversible process, and how does it differ from reversible and quasi-static processes, microscopic time symmetry and everyday irreversibility? definition
- Is the question about thermodynamics, engineering efficiency or a philosophical analogy? boundary
Aliases
Named aliases.
Aliases
Aliases.
- What is Joule expansion, and what does information-theoretic death mean in cryonics debates? definition
- Which entry fits the specific concept? action
Thermodynamics Second law.
Science.
Entropy
Entropy production.
Entropy
Entropy.
- How is entropy production calculated for irreversible processes? measurement
- Which references are standard? provenance
Joule expansion
Free expansion.
Joule expansion
Joule expansion.
- Why does free expansion of an ideal gas increase entropy without heat transfer? provenance
- Which sources are cited? provenance
Engineering Efficiency.
Science.
Losses
Irreversibility losses.
Losses
Losses.
- How do irreversibilities reduce engine and refrigerator efficiency? provenance
- Which entry fits exergy? action
Carnot
Carnot limit.
Carnot
Carnot.
- Why is the Carnot efficiency an upper limit reached only by reversible cycles? provenance
- Which entry fits Carnot cycle? action
Context Time and philosophy.
Attribution.
Arrow of time
Arrow of time.
Arrow of time
Arrow of time.
- How do physicists explain the arrow of time from time-symmetric laws, with views attributed? provenance
- Which entry fits arrow of time? action
Cryonics
Information-theoretic death debate.
Cryonics
Cryonics.
- What do cryonics advocates and critics argue about information-theoretic death, with positions attributed? provenance
- Is the presentation neutral and attributed? boundary
What the second pass must settle
- The registry alias information-theoretic death should be moved to cryonics entries with debates attributed
- Should Joule expansion be a separate entry?
- How should thermodynamics references be linked?