{"query": "Coordinates — the grid on the globe", "count": 20, "results": [{"id": "card_geography_coordinates", "title": "Coordinates — the grid on the globe", "shelf": "codex", "surface": "secular", "snippet": "A degree of latitude is about 111 km (sealed), a minute of arc a nautical mile; latitude and longitude turn the globe into addressable space.", "authority_tier": "engine_derived", "source": "Narrow Highway — geography", "readable": false, "generated": false}, {"id": "card_theory_honeycomb_conjecture", "title": "Optimal packing & the honeycomb conjecture (Hales)", "shelf": "theories", "surface": "secular", "snippet": "The hexagonal grid is the most efficient way to divide a surface into regions of equal area with the LEAST TOTAL PERIMETER. Stated by Pappus of Alexandria around 300 AD as an observation about bees, i", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_theory_ac_polyphase_power", "title": "AC & the polyphase system (Tesla, and why the grid is alternating)", "shelf": "theories", "surface": "secular", "snippet": "AC & the polyphase system (Tesla, and why the grid is alternating) — an engine domain that can touch it: electrical. Calibration: seals — transmission loss, turns ratio and phase relations compute. Ni", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_theory_ohm_s_law_circuit_theory", "title": "Ohm's law & circuit theory (Kirchhoff)", "shelf": "theories", "surface": "secular", "snippet": "Ohm's law & circuit theory (Kirchhoff) — an engine domain that can touch it: electrical. Calibration: seals — voltages, currents and power all compute directly. V = IR, plus Kirchhoff's two rules: cur", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}, {"id": "card_nav_grid_coords", "title": "Grid coordinates — read right, then up", "shelf": "navigation", "surface": "secular", "snippet": "A map grid lets you name any point with numbers. Rule: READ RIGHT, THEN UP. First read the vertical grid line to the LEFT of your point and go along the bottom (the EASTING), then the horizontal line ", "authority_tier": "reference", "source": "U.S. Army FM 3-25.26 — Map Reading and Land Navigation (public domain)", "readable": false, "generated": false}, {"id": "card_water_rainwater", "title": "Harvesting rainwater", "shelf": "water", "surface": "secular", "snippet": "A roof is a large water catcher: ~600 gallons per inch of rain on a 1,000 sq ft roof. Channel gutters into a covered BARREL or tank. Use a FIRST-FLUSH diverter (or just discard the first few minutes) ", "authority_tier": "reference", "source": "U.S. EPA drinking-water guidance (public domain)", "readable": false, "generated": false}, {"id": "card_nav_compass", "title": "The compass — magnetic north vs true north", "shelf": "navigation", "surface": "secular", "snippet": "A compass needle points to MAGNETIC north, which differs from TRUE (map) north by an angle called DECLINATION — printed on the map's margin, and different for every region and slowly changing. To be a", "authority_tier": "reference", "source": "U.S. Army FM 3-25.26 — Map Reading and Land Navigation (public domain)", "readable": false, "generated": false}, {"id": "card_water_plan", "title": "A household water plan", "shelf": "water", "surface": "secular", "snippet": "Write it down before the tap fails. Name your PRIMARY source and at least one BACKUP (stored supply, rainwater, a well, a nearby stream). State how much you STORE (a gallon per person per day × your t", "authority_tier": "reference", "source": "FEMA / Ready.gov emergency water guidance (U.S. government, public domain)", "readable": false, "generated": false}, {"id": "card_power_basics", "title": "Volts, amps, watts — the words you need", "shelf": "energy", "surface": "secular", "snippet": "Three words run everything. VOLTS (V) are the push (like water pressure); AMPS (A) are the flow (like the current in a pipe); WATTS (W) are the actual power, and Watts = Volts × Amps. Energy over time", "authority_tier": "reference", "source": "Basic electrical law (Ohm's law; power = volts × amps) — public fact", "readable": false, "generated": false}, {"id": "card_water_how_much", "title": "How much water to store — a gallon a day, and more", "shelf": "water", "surface": "secular", "snippet": "Store at least 1 US gallon (about 4 liters) per person PER DAY — roughly half for drinking, half for cooking and hygiene — and more in hot weather, for children, nursing mothers, the sick, and pets. K", "authority_tier": "reference", "source": "FEMA / Ready.gov emergency water guidance (U.S. government, public domain)", "readable": false, "generated": false}, {"id": "card_water_storing", "title": "Storing water so it stays safe", "shelf": "water", "surface": "secular", "snippet": "Use clean, FOOD-GRADE containers (commercial water jugs, or well-scrubbed food buckets) — never old milk or juice jugs, whose sugars and proteins can't be fully cleaned and will grow bacteria. Fill wi", "authority_tier": "reference", "source": "CDC water safety & storage guidance (U.S. government, public domain)", "readable": false, "generated": false}, {"id": "card_nav_orient_map", "title": "Orienting the map to the ground", "shelf": "navigation", "surface": "secular", "snippet": "Orient the map so its top (north) points to real north — then everything on the paper lines up with the world in front of you. Lay the compass on the map with its edge along a north-south grid line, t", "authority_tier": "reference", "source": "U.S. Army FM 3-25.26 — Map Reading and Land Navigation (public domain)", "readable": false, "generated": false}, {"id": "card_n_84ee70059175", "title": "The map's axes are its spectral modes (the Fourier lens)", "shelf": "concepts", "surface": "secular", "snippet": "Fourier's move — decompose a whole into the few fundamental modes that generate it — generalized off the regular cycle (where the FFT lives) to the map: the EIGENMODES of the dimension correlation mat", "authority_tier": "matt", "source": "Operator's seed (Matt) — honest grade: plausible", "readable": false, "generated": false}, {"id": "card_alm_connection_shape_and_number_are_one", "title": "Almanac: Shape and number are one -- coordinates turn every figure into arithmetic and back, with the right triangle as the master key", "shelf": "almanac", "surface": "secular", "snippet": "SITUATION\n  Capstone of the geometry cluster. Lay a grid on space and shape becomes number: a point is its coordinates, a length is a calculation, an angle is a ratio -- and the sealed cards of this c", "authority_tier": "reference", "source": "The Almanac — verified-only practical wisdom (sealed)", "readable": false, "generated": false}, {"id": "card_bridge_theory_ac_polyphase_power__electromagnetic_spectrum", "title": "Bridge: AC & the polyphase system (Tesla, and why the grid is alternating)  ↔  The electromagnetic spectrum & modulation (radio to gamma, one axis)", "shelf": "bridges", "surface": "secular", "snippet": "AC & the polyphase system (Tesla, and why the grid is alternating) and The electromagnetic spectrum & modulation (radio to gamma, one axis) are the same form in different domains. the Tesla coil is a ", "authority_tier": "reference", "source": "The Bridges — cross-domain isomorphisms", "readable": false, "generated": false}, {"id": "card_bridge_theory_euclidean_geometry_the_parallel_postulate__cell_theory", "title": "Bridge: Euclidean geometry & the parallel postulate  ↔  Cell theory", "shelf": "bridges", "surface": "secular", "snippet": "Euclidean geometry & the parallel postulate and Cell theory are the same form in different domains. the honeycomb theorem (Hales 1999): the hexagonal grid minimizes total perimeter per area, and the i", "authority_tier": "reference", "source": "The Bridges — cross-domain isomorphisms", "readable": false, "generated": false}, {"id": "card_n_5292dfecea18", "title": "When the tune is correct, the theories will be correct (consonance -> truth)", "shelf": "concepts", "surface": "secular", "snippet": "Matt: 'When the tune is correct, the theories will be correct.' Read the map's spectrum as music: a CORRECT arrangement will be CONSONANT (its inter-mode intervals land on just ratios); the dissonance", "authority_tier": "matt", "source": "Operator's seed (Matt) — honest grade: plausible", "readable": false, "generated": false}, {"id": "card_water_filters", "title": "Filters — what each kind actually removes", "shelf": "water", "surface": "secular", "snippet": "Not all filters do the same job. SEDIMENT/cloth filters remove dirt and grit only. CERAMIC and HOLLOW-FIBER (0.1–0.2 micron) filters remove bacteria and protozoa (giardia, crypto) but usually NOT viru", "authority_tier": "reference", "source": "U.S. EPA drinking-water guidance (public domain)", "readable": false, "generated": false}, {"id": "card_water_clarify", "title": "Making cloudy water clear before you treat it", "shelf": "water", "surface": "secular", "snippet": "Disinfection (chlorine especially) works poorly on cloudy water — the particles shield germs and soak up the chlorine. So CLARIFY first: let muddy water SETTLE for an hour or more and pour off the cle", "authority_tier": "reference", "source": "CDC water safety & storage guidance (U.S. government, public domain)", "readable": false, "generated": false}, {"id": "card_spine_survival", "title": "The field library — outdoor, survival, bushcraft & homestead knowledge", "shelf": "spine", "surface": "secular", "snippet": "Practical knowledge for the prepared and the off-grid — water, fire, shelter, first aid, food, navigation, signaling, weather, and the homestead skills of preserving, growing, and keeping. Gathered fr", "authority_tier": "reference", "source": "The field library (curated, public domain)", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_geography_coordinates"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}