Dynamic Head: H = 1/2 ϱ V2
The wacky looking Greek character is called ϱ in HTML, and \varrho in LaTeX, which I interpret to be a variation on the character roh, ρ. The only thing that makes any sense to me is that...
ϱ = 1/g, where g is acceleration due to gravity.
Has anybody seen anyone do this? Have you done this anywhere?