Pat, My reading is that Bill Potts is visulazing short distances in meters and sensing short time intervals in seconds, and the two together as he watches an object, perhaps a feather, blowing freely in the wind.
The same can be done easily with respect to vehicles moving slowly in a construction zone. The same are not possible in kilometers and in hours for small values of each. Go SI, speed in m/s. Gene. ---- Original message ---- >Date: Wed, 18 Jun 2008 21:03:05 +1000 >From: Pat Naughtin <[EMAIL PROTECTED]> >Subject: [USMA:41166] Wind speed m/s >To: "U.S. Metric Association" <[email protected]> >Cc: "U.S. Metric Association" <[email protected]> > > On 2008/06/16, at 3:45 AM, Bill Potts wrote: > > Now, for wind speed, m/s makes eminent sense. > There, we're dealing with > whether or not something can be visualized. > > Dear Bill, > Thanks for this suggestion. It really stated me > thinking. > My first thought was about the ability of your > imagination to visualise an invisible substance such > air in an invisible form such as wind. > However, to continue your theme of 'something can be > visualized', I have begun the attached article with > these two sentences: > > I want you to share a thought experiment with me. > > Visualise a cubic metre of air. >________________ >________________ > Enjoy! > Cheers, > > Pat Naughtin > PO Box 305 Belmont 3216, > Geelong, Australia > Phone: 61 3 5241 2008
