Thanks, Jason, for your well-balanced opinion. So, Hz appears to have a supporter here (and I, personally, given Joe's comments, may start to favor this option myself, too...).
Marcus On Tue, 16 Jul 2002 14:29:32 James Wentworth wrote: >The Hz is already used in engineering to denote one rotation. When I was >helping the Poker Flat Research Range obtain a number of surplus Hydra-70 70 >mm aircraft rockets from the US Army, I noticed in the performance >specifications that the rockets' roll rate was expressed in Hz. The hertz >is a perfect "drop-in" replacement for rpm. I think it isn't used more >frequently in mechanical engineering because non-electrical engineers think >of it as an electrical unit (just as many American MEs are reluctant to rate >combustion engine power in watts because "everybody knows the watt is an >electrical unit."). It's a matter of incorrect perception stemming from >ignorance. -- Jason > >----- Original Message ----- >From: Ma Be <[EMAIL PROTECTED]> >To: U.S. Metric Association <[EMAIL PROTECTED]> >Sent: Tuesday, July 16, 2002 7:27 AM >Subject: [USMA:21151] What can we replace rpm with?... > > >> The post below got me thinking... I know we tried to get some discussion >started here on this topic, rpm, but I'd like to see this issue revisited >and hopefully come up with some consensus on this. >> >> I feel quite strongly that rpm is also another... "idiocy" we could do >without (sorry, couldn't find a better adjective for it). If we are to >think of this property as "periodical" we could certainly think of replacing >it with Hz (or a prefixed "version" of it, like cHz or mHz). If we think of >"rotational speed" (in angular form) then we'd be talking about this in >rad/s, I'd think. >> >> Any ideas/suggestions from our technical gurus/experts here, please? >Thank you kindly. >> >> Marcus >> >> On Mon, 15 Jul 2002 15:12:25 >> Carter, Baron wrote: >> >And of course if you go to the Citroen site www.citroen.com it is all >metric >> >including the English version. >> > >> >Baron Carter >> > >> >-----Original Message----- >> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] >> >Sent: Monday, 15 July, 2002 14:59 >> >To: U.S. Metric Association >> >Subject: [USMA:21116] New 'metric' car >> > >> > >> >I am now the proud owner of a Citroen Picasso. For those unfamiliar >> >with it, there is a totally digital dash. This was one of the >> >attractions for me, as Citroen had previously told me that it could >> >easily be set to metric. And so it can. There is a simple menu >> >structure, that allows setting of language, date, time (12 or 24 h), >> >and units. So I now have a car which tells me how many km I can go on >> >remaining fuel (diesel, by the way), how many km I've travelled in >> >total and on the trip, how many l/100 km I am using, etc. >> > >> >As well as that, it's a very nice car! >> > >> >Chris >> > >> >-- >> >UK Metric Association: http://www.metric.org.uk/ >> > >> > >> >> >> Is your boss reading your email? ....Probably >> Keep your messages private by using Lycos Mail. >> Sign up today at http://mail.lycos.com >> > Is your boss reading your email? ....Probably Keep your messages private by using Lycos Mail. Sign up today at http://mail.lycos.com
