{
  "title": "El Calor del Comal — Field Manual Data Twin",
  "author": "Carlos Tellez",
  "version": "1.0",
  "date": "2026-07-18",
  "sections": {
    "comal": {
      "material": "fired_clay",
      "thermal_conductivity": {
        "min": 0.6,
        "max": 1.2,
        "unit": "W/(m·K)",
        "source": "https://www.wikidata.org/wiki/Q487005"
      },
      "specific_heat_capacity": {
        "value": 840,
        "unit": "J/(kg·K)"
      },
      "density": {
        "value": 2400,
        "unit": "kg/m³"
      },
      "surface_temperature_optimal": {
        "value": 230,
        "tolerance": 15,
        "unit": "°C"
      },
      "heat_soak_minimum": {
        "value": 18,
        "unit": "minutes"
      }
    },
    "masa": {
      "material": "nixтамalized_maize_matrix",
      "hydration": {
        "target": 0.30,
        "unit": "mass_fraction"
      },
      "dynamic_viscosity": {
        "min": 850,
        "max": 1200,
        "unit": "Pa·s"
      },
      "rheology": {
        "storage_modulus_G_prime": {
          "value": 1800,
          "unit": "Pa"
        },
        "loss_modulus_G_double_prime": {
          "value": 950,
          "unit": "Pa"
        },
        "yield_stress_tau": {
          "value": 420,
          "unit": "Pa"
        }
      },
      "kneading_protocol": {
        "frequency": {
          "value": 1.2,
          "unit": "Hz"
        },
        "palm_pressure": {
          "value": 25,
          "unit": "N/cm²"
        }
      },
      "source": "https://www.wikidata.org/wiki/Q11380"
    },
    "floor": {
      "material": "ceramic_tile",
      "friction_coefficients": {
        "static_mu": {
          "value": 0.72,
          "condition": "dry_clean"
        },
        "kinetic_mu": {
          "value": 0.58,
          "condition": "sliding_onset"
        }
      },
      "normal_force_reference": {
        "value": 680,
        "unit": "N",
        "note": "average_adult_mass_x_g"
      },
      "friction_threshold": {
        "value": 489,
        "unit": "N",
        "formula": "mu_static * F_normal"
      },
      "contaminant_tolerance": {
        "oil_film_thickness_max": {
          "value": 0.3,
          "unit": "mm"
        }
      },
      "standard": "ASTM_C1028"
    }
  },
  "narrative_links": {
    "rivera_rise_film": "../films/rivera-rise/",
    "home": "../index.html"
  },
  "license": "CC-BY-SA-4.0"
}