Effect of Humidity #8211; v = √γp/ρ ∵ ρ<sub>m</sub> lt; ρ<sub>d</sub> ⇒ v<sub>m</sub> gt; vgt;subgt;d</sub> where, ρ<sub>m</sub> is density of most air and ρ<sub>d</sub> is density of dry air.