physics.thermo.thermal_resistance

Three distinct suites: educational examples on the calculator page, this legacy regression count (16/16 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

This calculator CURRENT · Public schema 1.0.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-09-25.o2-o3. Calculation version 1.0.0. CVP 1.0.0-proposed. 4/4 golden · 8/8 CVP boundary · 7/7 invalid · 1/1 property · 1/1 metamorphic · 8/8 O3 · 2/2 cross-interface · 5/5 CVP contract. digest d06114969238. O2: lumped thermal resistance vs a separate-module identity (≤2 ULP). Not radiation and not a heatsink. ≤2 ULP vs O3 applies only to the published tabulated thermal-resistance vectors. Not radiation and not a heatsink.

• Golden (oracle-backed) 4 / 4
• CVP boundary 8 / 8
• Invalid input 7 / 7
• Property 1 / 1
• Metamorphic 1 / 1
• O3 high-precision 8 / 8
• Cross-interface 2 / 2
• CVP contract 5 / 5
• Interfaces PASS · UI (SSR) / REST / MCP
• Interface claim ui-ssr is query-result HTML, not a live browser session. Error-path engine·REST·MCP 1/1 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only.
• Verified scope Conduction R=L/(k A), convection R=1/(h A), series and parallel networks, optional Q=ΔT/R, + O3 mpmath tabulated resistance.
• Assurance Engineering
• Deferred Not radiation, not a heatsink, and not a composite wall.

• release artifacts aligned PASS
• schema output required declared PASS
• schema valid input executes PASS
• engine success output validates schema PASS
• rest success payload validates schema PASS

Fingerprint sha256:353b48c1caebcd92a7a2c40982070b8d95734bd596acab1ca0044191d8b42671

Input schema sha256:c331e6933cc6a01f659c5664c757fb2628060083dde7c46f418b6ad0c73a1911 · Output schema sha256:2cc61d569661afa57c1e25d9fc267c2e3d71528b7b4e40c616d7bcd3ccb80cfe · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Tool

thermal-resistance

Engine

thermal-resistance

Engine build

2026-09-17

Evidence core

2026-09-17T01:45:52.481Z

Rendered

2026-11-10T05:18:42.004Z

Last reviewed

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Assumptions

• Lumped thermal resistances; SI K/W
• Series R=ΣR_i; parallel 1/R=Σ1/R_i; Q=ΔT/R
• Not Fourier/Newton Q pages
• Not heatsink θ, not steam, not radiation

Limitations

• Lumped R; SI K/W
• Series R=ΣR_i; parallel 1/R=Σ1/R_i; Q=ΔT/R when ΔT is given
• Not Fourier/Newton Q (see /calc/physics/heat-transfer)
• Not heatsink θJC/θSA, not steam, not radiation