Gravity's Coupling across Levels

Gravity's Coupling across Levels is the strength of gravity between two protons at harmonic level ⚚, (m_p / m_P)², from the Matter Scale of a Level: α_G(⚚) = (14.3 / 2^(⚚/3))². At our level it gives 5.9 × 10⁻³⁹, the measured value. It falls about 1.6 times a level, more slowly than α, which is why the two cross and stars have an upper level. It connects to Matter Scale of a Level, Star Existence Condition and Band of Chemistry and Stars.