Paul, I suspect that this is due to the perception of the manufacturer that the public would have more familiarity with watts and much less with joules. Therefore, they came up with watt-seconds to perhaps satisfy this perception.
But at least we should be glad that they did not come up with some stupid sqft.lb/sqs, whatever... Marcus On Mon, 25 Mar 2002 08:12:26 Fardig, Paul S. wrote: > >I have two different photographic flash units. One is rated in joules and >one in "watt-seconds," which is commonly used for flash units. Looking at >the mathematics, I see a joule is defined as a kg*m2/s2, while a watt is a >kg*m2/s3. Therefore, a watt-second would be the same as a joule, since the >seconds to the minus 3 power would become seconds to the minus 2 power when >multiplied by seconds (overall > energy times time equals power). > >Is my reasoning correct?? Any ideas why the industry would be using >"watt-seconds" instead of joules? > >Paul > > Is your boss reading your email? ....Probably Keep your messages private by using Lycos Mail. Sign up today at http://mail.lycos.com
