Beer's Law

tau

^u = e^{-sec() dz}

kappa

=

sum

kappa

(CO₂,CO,CH₄,N₂O) + kappa

kappa

(H₂O) +

kappa

(O₃)

Transmittance between the top of the atmosphere and level at z is a function of the quantity and absorption of all gases.

The taller the glass, the darker the brew,

The less the amount of light that comes through.