Had crappy day. Then I found this beaut website.
The link should be a good hint. "Fluid experiments". And no urine involved.
It's a fluid dynamics 'simulator' in your browser. Click your mouse and drag. Create ripples. Spin. Twirl. Cross the streams.
Very pretty. oddly relaxing.
Edited by AccessDenied, 18 November 2014 - 10:17 PM.