On Tuesday 02 September 2008 19:42:03 [EMAIL PROTECTED] wrote: > I pass this along from the UKMA web site. Both the posting and the comment > "hit the nail on the head". Ezra > > http://www.metricviews.org.uk/2008/09/02/do-schools-entrench-vbm/
My homework for today was about pressures: given a manometer filled with mercury connecting an oil pipe and a water pipe, and the heights of these points above those, calculate the difference between pressures, and the like. When I was in high school, the physics classroom had kilograms on hooks, a ten-meter distance marked off from a diffraction grating, and the like. So we calculated in metric. In the hydrology class I'm taking, the pressures are in psi, and he's teaching us to multiply the specific gravity by the density of water in pounds per cubic foot. I wrote to him explaining the density in kilograms per liter, but he hasn't digested it yet. Pierre
