{"id": "card_instr_physical_constants", "kind": "reference", "title": "The physical constants — one source", "body": "The The physical constants — one source verifier (src/concordance/verifiers/physical_constants.py). Builds on: SI units — the base of measure. On the one map it instruments: card_chart_fine_structure. Found from the code's own imports, never invented; the module keeps the logic, this card is a pointer.", "source": {"label": "verifier: physical_constants", "url": "", "ref": "src/concordance/verifiers/physical_constants.py", "domain": "mathematics", "authority_tier": "engine_derived"}, "shelf": "codex", "box": "instrument", "bands": ["instrument", "verifier", "one map", "physical_constants"], "subject": "The physical constants — one source", "connections": [{"to_card_id": "card_spine_instruments", "relationship": "member_of", "evidence": "an instrument on the one map"}, {"to_card_id": "card_instr_alpha_scale", "relationship": "enables", "evidence": "The fine-structure scale (α) imports The physical constants — one source"}, {"to_card_id": "card_instr_condensed_matter", "relationship": "enables", "evidence": "Condensed matter imports The physical constants — one source"}, {"to_card_id": "card_instr_grav_scale", "relationship": "enables", "evidence": "The gravitational scale (G) imports The physical constants — one source"}, {"to_card_id": "card_instr_molar_scale", "relationship": "enables", "evidence": "The molar scale (N_A) imports The physical constants — one source"}, {"to_card_id": "card_instr_si_units", "relationship": "builds_on", "evidence": "The physical constants — one source imports SI units — the base of measure"}, {"to_card_id": "card_instr_planck_scale", "relationship": "enables", "evidence": "The Planck scale (ħ) imports The physical constants — one source"}, {"to_card_id": "card_instr_rela_scale", "relationship": "enables", "evidence": "The relativistic scale (c) imports The physical constants — one source"}, {"to_card_id": "card_instr_thermal_scale", "relationship": "enables", "evidence": "The thermal scale (k_B) imports The physical constants — one source"}, {"to_card_id": "card_chart_fine_structure", "relationship": "connects_at", "evidence": "instruments the map: the fine-structure constant α = e^2/(2 eps0 h c) is computed from this one attested constant source"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.instrument", "facets": {"subject": ["one map", "physical_constants", "verifier"]}, "presentation": {"glyph": "•", "kind_label": "instrument", "by": "verifier: physical_constants", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_spine_instruments", "title": "The instruments — a spine of the one map", "relationship": "on the shelf of", "why": "an instrument on the one map", "href": "/card/card_spine_instruments", "resolved": true}, {"id": "card_instr_alpha_scale", "title": "The fine-structure scale (α)", "relationship": "enables", "why": "The fine-structure scale (α) imports The physical constants — one source", "href": "/card/card_instr_alpha_scale", "resolved": true}, {"id": "card_instr_condensed_matter", "title": "Condensed matter", "relationship": "enables", "why": "Condensed matter imports The physical constants — one source", "href": "/card/card_instr_condensed_matter", "resolved": true}, {"id": "card_instr_grav_scale", "title": "The gravitational scale (G)", "relationship": "enables", "why": "The gravitational scale (G) imports The physical constants — one source", "href": "/card/card_instr_grav_scale", "resolved": true}, {"id": "card_instr_molar_scale", "title": "The molar scale (N_A)", "relationship": "enables", "why": "The molar scale (N_A) imports The physical constants — one source", "href": "/card/card_instr_molar_scale", "resolved": true}, {"id": "card_instr_si_units", "title": "SI units — the base of measure", "relationship": "builds on", "why": "The physical constants — one source imports SI units — the base of measure", "href": "/card/card_instr_si_units", "resolved": true}, {"id": "card_instr_planck_scale", "title": "The Planck scale (ħ)", "relationship": "enables", "why": "The Planck scale (ħ) imports The physical constants — one source", "href": "/card/card_instr_planck_scale", "resolved": true}, {"id": "card_instr_rela_scale", "title": "The relativistic scale (c)", "relationship": "enables", "why": "The relativistic scale (c) imports The physical constants — one source", "href": "/card/card_instr_rela_scale", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_instr_physical_constants", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_instr_physical_constants"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}