AES wrote in news:siegman-11B9F7.19492611042006
@news.stanford.edu:

This is totally OT for this group -- except the group contains a lot of
obviously clever people who are professionally interested in aerodynamic
and fluid flows and pressures, pipes, valves, and the like, and maybe
someone will be entertained by the following odd bathroom sink behavio

Snipola of rest

You filled the pipe to the point it starts acting as a siphon.

I've seen my shower do it. I'm on the second level. I have one of
them 'water saver' heads so you know the flow is slow. I get about
an inch of water in the tub anyway. After several minutes, it
starts draining and stays that way.

Brian
--
http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism
Seismic FAQ: http://www.skywise711.com/SeismicFAQ/SeismicFAQ.html
Quake "predictions": http://www.skywise711.com/quakes/EQDB/index.html
Sed quis custodiet ipsos Custodes?