Reusable cognitive primitives
Energy transformation
Energy is never created or destroyed; it changes from one form into another, and some is always lost as heat.
Where it appears
- Conservation of energy
- Efficiency
- Electric potential
- Electromagnetic induction
- Electromagnetic radiation
- Energy
- Energy transfer
- Entropy
- First law of thermodynamics
- Heat
- Heat transfer
- Kinetic energy
- Law of thermodynamics
- Light (sunlight)
- Mass–energy equivalence
- Nuclear fission
- Nuclear fusion
- Photoelectric effect
- Potential energy
- Second law of thermodynamics
- Sound intensity
- Thermal energy
- Work
Dependencies & synergies
Derived from the graph’s real structure — 53 concepts across 37 disciplines carry this pattern. Every figure is a count, not a score.
How many concepts carrying this pattern are seen through each discipline.
Other thinking patterns that recur on the same concepts — the more shared concepts, the more often they co-occur.
What kinds of relationships the carrying concepts form — the relational signature of the pattern.
Concepts where this pattern does the most cross-disciplinary work — each reaches disciplines beyond its own.
- Energy transferreachesAcousticsAgricultureBiochemistryBiophysicsCell BiologyChemistryEcologyEconomicsEnvironmental ScienceMechanical EngineeringMechanicsOceanographyOpticsOrganic ChemistryPhysiologyPolitical EconomyPolitical PhilosophySociologyStatistical PhysicsSustainability ScienceSystems BiologyThermodynamics
- PhotosynthesisreachesAgricultural EngineeringBotanyCell BiologyEcologyEconomicsEngineeringEnvironmental EngineeringEnvironmental ScienceGeographyGeologyMarine BiologyMicrobiologyNutrition ScienceOceanographyOrganic ChemistryPhysicsSustainability Science
- Food webreachesAnthropologyDemographyDiscrete MathematicsEngineeringEnvironmental EngineeringEvolutionary BiologyLinear AlgebraMathematicsNetwork ScienceNutrition SciencePhysicsSociologyUrban Planning
- EfficiencyreachesBiologyBusinessEcologyEnergy EngineeringInformation TheoryMathematical ModellingMechanical EngineeringNutrition ScienceOptimizationPhysical ChemistryStatistical PhysicsSystems EngineeringThermodynamics
- Electromagnetic radiationreachesAcousticsAtmospheric ScienceBiomedical EngineeringEngineeringGeographyGeoinformaticsMedicineOceanographyRadiologyRemote SensingTelecommunications EngineeringThermodynamics
- EnergyreachesAstronomyBiologyChemistryEarth & Space SciencesEnergy EngineeringEngineeringEnvironmental EngineeringMechanical EngineeringMechanicsNutrition SciencePlasma PhysicsThermodynamics
Carrying concepts that others in the same pattern build on (they depend on or follow from these).
- Nuclear fusion — 2 other concepts build on it
- Energy — 1 other concept build on it
- Entropy — 1 other concept build on it
- Light (sunlight) — 1 other concept build on it
- Photosynthesis — 1 other concept build on it
Examples across disciplines
Photosynthesis turns light energy into chemical energy stored in glucose.
A falling object turns gravitational potential energy into kinetic energy.
A factory turns the chemical energy of fuel into useful work — and waste heat.
How this pattern travels
Interpreted from where the pattern recurs in the atlas — structural transfer and coverage, not a claim it is universally the "best" model.
Recurs across 37 disciplines over 53 carrier concepts — a broadly transferable pattern.
structural · Structural recurrence in the atlas — a pattern is a reasoning lens, not a law.
19 of its 53 carrier concepts are themselves cross-disciplinary connectors.
structural · Structural recurrence in the atlas — a pattern is a reasoning lens, not a law.
Explicit "where it breaks" notes exist for 5 of 8 annotated assignments.
curated · Curated boundary annotations — absence is a representation gap, not evidence the model has no limits.
Currently dark in the atlas: no origin recorded.
atlas representation · Describes the current Thinking OS representation, not the model itself.
Coverage matrix
How these concepts distribute across domains and concept families — real counts, not a score.
Knowledge timeline
Real, sourced key dates of these concepts.
- 1831Electromagnetic induction · Discovery · Physics
- 1905Mass–energy equivalence · Formalization · Physics
The statistical fingerprint
How the 53 concepts that exercise this pattern distribute — from the graph, not a ranking.
Disciplinary fingerprint
Carrier concepts under each illuminating lens.
How settled its carriers are
Epistemic status of the concepts that exercise this pattern.
Where the model breaks
This pattern is a reasoning lens, not a law. Here is where it stops helping:
- Loudspeaker (mechanism): Most electrical input becomes heat, not sound — efficiency is often a few percent; energy is conserved but usefully "transformed" only in small part.
- Microphone (mechanism): The model tracks the conversion but not the losses: transduction is never 100% efficient, and the missing energy leaves as heat and distortion.
- Photoelectric effect (mechanism): Energy converts one quantum at a time: below the threshold frequency no current flows regardless of intensity — a purely classical energy-transfer picture fails.
- Sound intensity (mechanism): Intensity falls with distance from spreading (geometry), not only from conversion loss — the energy-transformation lens omits the propagation term.
- Transducer (mechanism): Framing a device as an energy converter hides bandwidth, noise and non-linearity limits that decide whether the conversion is actually useful.
2 of 8 explained assignments cite a source; the rest are editorial interpretations. None is externally validated.
✕ That energy is 'used up' and disappears, rather than being transformed and dispersed.
Journeys where it shows up
You have seen this model in one place. Where else could it apply — and where would the analogy break?
Efficiency →Follow the energy: where did it come from, what form is it in now, and where does it go next?
- Recurs across 37 disciplines.
- 121 concepts exercise this thinking pattern.
- 5 of them explicitly note where the model breaks down.
- It is practised in 2 learning journeys.
Derived from the graph — a pattern is a reasoning lens, not a law.
Trace one unit of energy through this system: what form did it start in, what does it become, and where does the portion that's 'lost' end up as heat?
Keep this question handy when you meet something new — it helps you notice the pattern, not just name it.