Hi All,
I think David has it right.
When I put a hose into my swimming pool (a very large bucket) the effect is
barely
noticable - probably caused only by local eddies.
When it is put into a small bucket with the same nozzle it becomes
pronounced.
With no nozzle the effect is *greatly* dimi
Message text written by Tony Moss
>BUT as soon as the veriest tip of the nozzle touches the surface of the
water
it is 'snatched' downwards.<
I wonder if there is a surface tension/capillary type effect happening
here (probably not)... -- or perhaps the effect is most pronounced
near the su
Hi,
How about this - The jet rushing in to the water creates a 'hole'.
This hole is caused by the fact that water is pushed down and
away in the direction of the jet. is flowing.
The water in the bucket rushes in to fill the hole -
a vacuum has been created by the fact that water is being
Wonderful story, Tony! Often, the "obvious" theoretical explanation is
just shy of the mark...
> So much for theory! :-)
>
> I'm reminded of making toy paddle boats with children of the sort where a
> rectangular notch is cut at the back of a plywood 'boat' and a cruciform
> paddle is driven
Dear All,
I'm afraid I've only just got back from a short holiday and so am a bit
late in tossing my two penn'orth into the fountain...
I'm actually studying a solids and fluids course with the Open University
at the moment and have just finished the fluids part (2 assignments due in
next week),
David Higgon contributed
>Tony mentioned that his hose had a jet attachment that fitted onto the
>pipe, and I think this is the crucial bit. If typical of such attachments
>it will be of a larger diameter than the pipe, probably twice the size, and
>increase in diameter in a series of steps, eac
