I was filling up my dog's water bowl the other day and i noticed the surface of the water taking on a topography that looked extraordinarily similar to a graph of the Collatz Problem number of steps to get to zero.

I dont know the math be hind all of this, or how to begin drawing a comparison mathematically
[yet], but i know many problems have been solved by comparing seemingly unrelated things.

so maybe a comparison could be drawn between a cross section of the surface of water being driven into a whirlpool by a downward and angled jet (kitchen sprayer) in a conical cross section about 6 inches deep.

I know im probably not explaining this well, so please anno and ill try to answer any questions.

Impress your friends...http://lawrencehall...t/whatparoftsh.html Show off your knowledge of fluid dynamics and the Navier-Stokes equations with this fine T-shirt. [jurist, Sep 26 2006]

//Fluid dynamics is a pretty tricky field in which there are some unanswered questions.// There's an appropriate T-shirt that you can wear to impress your friends with your command of the subject. [Link] Certainly worked for my rather bright fourth grade nieces.