# Physics Bootcamp Refinement Audit Status: EXTERNAL_REFERENCE Date ingested: 2026-05-20 Source: https://www.physicsbootcamp.org/ Primary index surface: https://www.physicsbootcamp.org/fundamentals-bootcamp.html ## Claim Boundary Physics Bootcamp is used here as a curriculum coverage index, not as an authority for new physical claims. The stack already has broad physics equation coverage and several Lean physics surfaces; this audit identifies refinement gaps where the stack would benefit from explicit receipts, examples, or coverage tracking. Do not import prose or implementation from the site. Use the topic map as an external checklist. ## Local Coverage Snapshot Existing stack surfaces already cover: ```text Hamiltonian dimensions and dimensional homogeneity: 0-Core-Formalism/lean/Semantics/Semantics/HamiltonianFormal.lean SI constants and unit conversion: 0-Core-Formalism/lean/Semantics/Semantics/SIConstants.lean 0-Core-Formalism/lean/Semantics/Semantics/UnitConversion.lean Mechanics, thermodynamics, E&M, and quantum equation map: 3-Mathematical-Models/physics_eqs_mapped.md Physical-semantics boundary: 6-Documentation/docs/physics/PHYSICAL_SEMANTICS_PARADIGM.md Electromagnetic and electrostatic Lean surfaces: Semantics.ElectromagneticSpectrum Semantics.ElectrostaticsMetaprobe ``` ## Missing Or Underweighted Refinements ### 1. Measurement Receipt Layer Bootcamp starts with uncertainty, precision, accuracy, significant figures, absolute/relative uncertainty, propagation of uncertainty, order of magnitude, and dimensional analysis. Current stack has dimensions and units, but measurement quality is scattered across residual/error terms. Add a first-class measurement receipt: ```text MeasuredQuantity = value + unit + absoluteUncertainty + relativeUncertainty MeasurementReceipt = dimensional_ok + sigfig_policy + propagation_rule ``` Suggested future Lean module: ```text Semantics.MeasurementReceipt ``` This should be Q16_16/Q0_16 based and avoid floats in compute paths. ### 2. Curriculum Coverage Matrix Bootcamp is useful because it is sequential: mechanics -> fluids/waves -> thermal physics -> E&M -> optics -> relativity/quantum/atomic/nuclear topics. The stack has many advanced and speculative surfaces but no simple matrix that answers: ```text topic -> local module -> receipt type -> verified examples -> gaps ``` Suggested artifact: ```text 6-Documentation/docs/physics/PHYSICS_COVERAGE_MATRIX.md ``` This should prevent over-investing in high-level physics while missing basic receipts such as frame transforms, units, and measurement propagation. ### 3. Noninertial Frame Receipts Bootcamp explicitly separates accelerating frames, rotating frames, Earth-frame physics, and Coriolis force. The stack mentions Coriolis in equation maps, but should expose a finite receipt surface: ```text InertialFrame UniformlyAcceleratingFrame UniformlyRotatingFrame CoriolisTermReceipt ``` This belongs near rotation, torsion, and shell/PIST frame work. It should be a coordinate-transform receipt, not a new physics claim. ### 4. Rigid-Body Tensor Receipts Bootcamp separates fixed-axis rotation, moment of inertia, principal axes, gyroscope behavior, and kinetic energy about center of mass. The stack has rotation/quaternion/torsion machinery, but the classical rigid body interface should have a simple tensor audit: ```text InertiaTensorReceipt PrincipalAxesReceipt ParallelAxisReceipt RotationalEnergyReceipt ``` This is a good bridge between `UnitQuaternion`, GWL/toroidal shells, and hardware attitude/control surfaces. ### 5. Thermal Transport Before Thermodynamic Abstractions Bootcamp separates thermal expansion, calorimetry, conduction, convection, radiation, Newton cooling, black-body radiation, first law, entropy, and kinetic theory. The stack has strong entropy and thermodynamic language, but it should keep transport receipts separate from global entropy claims: ```text ThermalConductionReceipt ConvectionBoundaryReceipt RadiationBalanceReceipt CalorimetryBalanceReceipt MeanFreePathReceipt ``` This matters for hardware, materials, AngrySphinx compute-cost heat budgets, and any donated-cycle defense work. ### 6. E&M Boundary Receipts Bootcamp proceeds through charge conservation, Coulomb force, potentials, conductors as boundaries, method of images, dielectrics, circuits, AC complex impedance, displacement current, Maxwell equations, and EM waves. Current stack has EM surfaces, but the boundary-condition receipts should be made explicit: ```text ConductorBoundaryReceipt DielectricResponseReceipt ImageChargeReceipt ContinuityEquationReceipt MaxwellPointFormReceipt ComplexImpedanceReceipt ``` These are especially useful because they give cheap, checkable examples for semantic boundary laws. ### 7. Optics As A Routing/Projection Testbed Bootcamp covers Fermat's principle, Snell/refraction, lenses, optical instruments, Fresnel equations, polarization, birefringence, interference, and interferometers. The stack already has optics references and EM spectra, but optics should be treated as a clean projection/routing testbed: ```text FermatPathReceipt SnellBoundaryReceipt FresnelPolarizationReceipt ThinFilmInterferenceReceipt InterferometerPhaseReceipt ``` This is directly relevant to semantic routing: least-time path selection, boundary impedance mismatch, phase accounting, and projection loss. ## Priority Order ```text P0 MeasurementReceipt P1 PhysicsCoverageMatrix P2 FrameTransformReceipt P3 ThermalTransportReceipt P4 BoundaryConditionReceipt P5 OpticsRoutingReceipt ``` ## Integration Rule Use Bootcamp as a checklist for missing receipts, not as a new theory source. Every promoted refinement must land as one of: ```text Lean theorem Lean #eval receipt Q16_16/Q0_16 checker coverage matrix row with HOLD status ``` The likely highest-value next implementation is `MeasurementReceipt`: it would connect units, uncertainty propagation, significant figures, and dimensional analysis into a single gate before physics formulas enter the stack.