Ratio of grain's specific heat to water's, dimensionless.
Grain ≈ 1.67 kJ/kg·K, water 4.186 kJ/kg·K → 0.40. This is the "0.2" in
Palmer's imperial strike formula once quarts-per-pound is converted to
litres-per-kilogram (0.2 × 2.08635 = 0.4173); we use the physical ratio.
Ratio of grain's specific heat to water's, dimensionless.
Grain ≈ 1.67 kJ/kg·K, water 4.186 kJ/kg·K → 0.40. This is the "0.2" in Palmer's imperial strike formula once quarts-per-pound is converted to litres-per-kilogram (0.2 × 2.08635 = 0.4173); we use the physical ratio.