In message
,
harry writes
On Jul 16, 11:03*pm, Charles Ellson
wrote:
On Sat, 16 Jul 2011 22:40:07 +0100, The Natural Philosopher

wrote:
Graeme Wall wrote:
On 16/07/2011 10:24, Guy Gorton wrote:
That seems very low. *My facts may be wrong but I think 30ft of water
creates 1 atmosphere of pressure, which is about 14 lbs/sq.in.

If I remember my schoolboy physics, it's 32ft of water and 15lbs/sq.in.

32.2 & 14.4 rings a bell..

14.7 rings it better unless you're somewhere up a mountain.

NPT = 1013 millibars at sea level. We've gone metric, haven't you
heard?

It was supposed to be 1000mb but Napoleon's scientists got it wrong.

Not french by any chance, are you harry?


--
geoff