I think that's a V for the velocity field; they need to distinguish from dv for a volume integral. The equation looks vaguely Navier-Stokes-ish, with rotational terms like Coriolis force -- the sort of momentum balance you might write for large scale fluid motion in a weather simulation. But it's been so long since I looked at those, I could be deceived. The typography is, for the most part, terrible. However I do like their cutesy double integral sign for a surface integral. - John On 01/05/2013 06:43 PM, Fred lunnon wrote:
Puzzled by what appears to be a roofless nabla operator ... hence suspect hoax! WFL
On 1/5/13, Bill Gosper <billgosper@gmail.com> wrote:
Carolyn Bickford snapped https://mail-attachment.googleusercontent.com/attachment/?ui=2&ik=97b2a014c7... in the Lawrence Hall of Science gift shop. Any chance it's a legitimate formula for something? --rwg ______