units $ A atm C Cd cm Da eV g h Hz J K L M m min mmHg mol N Pa parsec s torr V W °aC °ΔC Å Ω ％ functions log() sum() tan() sin() sqrt() abs() moredigits() exp() CtoKscale() avg() ln() min() FtoKscale() uncertainty() quadp() quadn() max() cos() using in symbols °aC μ ％ ν Δ ℎνλ ΔᵣG°′ ρ ∞ ΦΨ