- #1
arcnets
- 508
- 0
Hi all,
the other day I was in a thermal bath where they had some whirlpool jets at the bottom of a basin about breast-deep. I was standing right over the jets, and the turbulence in the water was so strong at the surface, that I couldn't stand straight but was forced to sway back and forth and was almost washed away from the position of the jets.
I probed the ground with my toes and expected the position of the outlets to be easily detectable by a sharp vertical jet of water. But nothing! Next, I located the outlets by eye (there were maybe 5 or 6 of them, of ~1/4 inch diameter each), and put my toe on one. There was almost nothing to be felt, and I could easily block the jet with my toe.
Forces seem to be large only when close to the surface, and very small deeper down. Any physical explanation of this?
the other day I was in a thermal bath where they had some whirlpool jets at the bottom of a basin about breast-deep. I was standing right over the jets, and the turbulence in the water was so strong at the surface, that I couldn't stand straight but was forced to sway back and forth and was almost washed away from the position of the jets.
I probed the ground with my toes and expected the position of the outlets to be easily detectable by a sharp vertical jet of water. But nothing! Next, I located the outlets by eye (there were maybe 5 or 6 of them, of ~1/4 inch diameter each), and put my toe on one. There was almost nothing to be felt, and I could easily block the jet with my toe.
Forces seem to be large only when close to the surface, and very small deeper down. Any physical explanation of this?