Foundations of Energy
How energy is stored, transferred and transformed — from falling objects to living cells.
Graph explorer
Explore the knowledge graph
12 concepts viewed through this lens. Bridge concepts connect this view to Algebra, Algorithms, Anthropology, Artificial Intelligence….
Look for
What quantity is being driven to a maximum or minimum here, under what constraint — and could the search be stuck in a 'local best' that isn't the true one?
This is a reasoning lens, not ownership: the concepts belong to their disciplines, not to the model.
17 disciplines3 reasoning tool1 mechanism1 analogy
Of 12 explained assignments: 3 source-supported · 11 editorial · 1 need review · 8 with a stated boundary
Legend
- Focused concept
- Connected concept
- Bridge concept (just outside the lens)
- Arrow points from cause / source to effect / target
- A line with no arrow is a two-way relationship
- Node colour marks the concept’s primary discipline
0 concepts0 relationships0 disciplines0 relation families
Photosynthesis
Open concept →At a glance
The process by which plants use light energy to build sugar from carbon dioxide and water.
- Disciplines
- Biology · Chemistry · Agriculture
- Role in the graph
- Cross-disciplinary bridge — reaches Agricultural Engineering, Botany, Cell Biology, Ecology, Economics, Engineering, Environmental Engineering, Environmental Science, Geography, Geology, Marine Biology, Microbiology, Nutrition Science, Oceanography, Organic Chemistry, Physics, Sustainability Science
- Relationships
- 21 · 4 relation families
- Mental models
- 2
What am I looking at?
In this lens (12)
- Searching for the input that makes an objective as large or small as possible.
- Traits that raise reproductive success are favoured, hill-climbing fitness over generations.
- A trait shaped by selection toward better fit with the environment.
- Iteratively steps downhill to minimise a loss function.
- Trade maximises total output by specialising where opportunity cost is lowest.
Bridge concepts (51)
Just outside the lens — they connect it to other context.
- Algorithms, Computer Science, Discrete Mathematics, Logic, Mathematics, Software Engineering, Theory of Computation · connects to Dynamic programming, Greedy algorithm
- Artificial Intelligence, Computer Science, Machine Learning, Statistics · connects to Natural selection, Optimization
- Economics, Ethics, Finance, Microeconomics · connects to Comparative advantage, Marginal cost
- Biology, Business, Design, Economics, Engineering, Ethics, Political Science, Public Policy, Systems Engineering · connects to Cost–benefit analysis, Optimization
- Astrobiology, Biology · connects to Natural selection
Relationships as a list
The focused concept’s relationships. Pick another concept in the graph above to update this list.
Explore through a different lens
A lens is a deterministic projection of the graph. Pick a discipline, thinking pattern or journey to reframe the whole view.
By thinking pattern
Bayesian updatingCause and effectCompoundingConservationConstraintsDefense in depthDiffusion & spreadEmergenceEnergy transformationEntropy & irreversibilityEquilibriumFeedback loopIncentivesInformationLevels & hierarchyModularityNetworksOptimizationOscillationProbabilityRecursion & self-similarityScaleSignal vs noiseSource–pathway–receptorStocks and flowsSymmetry & invarianceThresholds & tipping pointsTrade-offsTriangulationVariation & selectionWaves
Concept collections
Concept collections are curated lenses onto the fabric — themed sets of ideas that recur across disciplines. They are not journeys; they are a way to read the graph.
Understanding Systems
Stocks, flows and feedback — why wholes behave in ways their parts do not.
Patterns Everywhere
Regularities that recur across maths, music, nature and art.
How Information Moves
Encoding, signals and noise — the same idea in computers, genes and nerves.
About this view
What this is
Start from one concept and expand outward. The view never shows everything at once — click a node to refocus, filter by relationship type, or switch to an accessible list.
One fabric
3750 concepts and 5051 typed relations form one connected component — no isolated silo.
How to read it
Focus a concept, or apply a lens (discipline, mental model, journey) to see only the threads that matter.