First Law of Thermodynamics

E314339

conservation law law of thermodynamics physical law

The First Law of Thermodynamics is the fundamental physical principle that states energy cannot be created or destroyed, only transformed or transferred, thereby conserving the total energy of an isolated system.

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All labels observed (4)

Label	Occurrences
First Law of Thermodynamics canonical	1
energy conservation law in thermodynamics	1
first law of thermodynamics	1
law of conservation of energy	1

Statements (50)

Predicate	Object
instanceOf	conservation law ⓘ law of thermodynamics ⓘ physical law ⓘ
alsoKnownAs	First Law of Thermodynamics ⓘ surface form: energy conservation law in thermodynamics First Law of Thermodynamics ⓘ surface form: law of conservation of energy
appliesTo	closed systems ⓘ isolated systems ⓘ open systems ⓘ
assumes	energy is a state function ⓘ internal energy depends on the state of the system ⓘ
constrains	possible thermodynamic processes of a system ⓘ
contrastsWith	Second Law of Thermodynamics which introduces entropy and irreversibility ⓘ
definesSymbol	Q as heat added to the system ⓘ W as work done by the system ⓘ ΔU as change in internal energy of the system ⓘ
expressedIn	dU = δQ − δW in differential form ⓘ
field	physics ⓘ thermodynamics ⓘ
historicalDevelopmentInvolves	Hermann von Helmholtz ⓘ James Prescott Joule ⓘ Julius Robert von Mayer ⓘ Rudolf Clausius ⓘ
historicalRoot	principle of conservation of vis viva ⓘ
implies	no device can produce work without energy input ⓘ perpetual motion machines of the first kind are impossible ⓘ
isFoundationFor	analysis of heat engines ⓘ analysis of refrigerators and heat pumps ⓘ energy conservation in classical thermodynamics ⓘ thermodynamic energy balance equations ⓘ
isPartOf	four laws of thermodynamics ⓘ
mathematicalForm	ΔU = Q − W ⓘ
precedes	second law of thermodynamics ⓘ surface form: Second Law of Thermodynamics third law of thermodynamics ⓘ surface form: Third Law of Thermodynamics
relatedTo	Noether's theorem ⓘ surface form: Noether’s theorem zeroth law of thermodynamics ⓘ surface form: Zeroth Law of Thermodynamics conservation of mechanical energy ⓘ
relatesConcept	energy transfer ⓘ energy transformation ⓘ heat ⓘ internal energy ⓘ work ⓘ
states	energy can only be transformed from one form to another or transferred between systems ⓘ energy cannot be created or destroyed in an isolated system ⓘ the total energy of an isolated system remains constant ⓘ
timePeriodOfFormulation	19th century ⓘ
usedIn	astrophysics ⓘ chemical thermodynamics ⓘ climate science ⓘ engineering thermodynamics ⓘ statistical mechanics ⓘ

How these facts were elicited

The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.

Instruction

You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10.

# Requirements
- If you don't know the subject at all, return an empty list.
- If the subject is not a named entity, return an empty list.
- Include at least one triple where predicate is "instanceOf".
- Do not get too wordy.
- Separate several objects into multiple triples with one object.

Input

Subject: First Law of Thermodynamics
Description of subject: The First Law of Thermodynamics is the fundamental physical principle that states energy cannot be created or destroyed, only transformed or transferred, thereby conserving the total energy of an isolated system.

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

On the Conservation of Force → relatedTo → First Law of Thermodynamics ⓘ

third law of thermodynamics → contrastsWith → First Law of Thermodynamics ⓘ

this entity surface form: first law of thermodynamics

First Law of Thermodynamics → alsoKnownAs → First Law of Thermodynamics ⓘ

this entity surface form: law of conservation of energy

First Law of Thermodynamics → alsoKnownAs → First Law of Thermodynamics ⓘ

this entity surface form: energy conservation law in thermodynamics