It was an andecdote Marcus. Must you take everything so literally? And blood is viscous....it could very well support 1 mm of itself in a puddle depending on the surface composition.
---------- Original Message ----------- From: "Ma Be" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Wed, 22 Oct 2003 15:55:55 -0700 Subject: [USMA:27254] Pool of blood > Actually... Are you kidding me, Jim? A whopping 1 mm??? Hmm... I > think that this would be more like a tenth, or two, of that! > > In other words, 2 tym, tops (where ty = 10^-4 ;-) ). > > I seriously doubt someone would bleed a liter on a square meter > surface. Two hundred mils, tops, would be much more like it. > > Marcus > > On Wed, 22 Oct 2003 15:16:22 > James R. Frysinger wrote: > >You're right, of course. In fact, the specs call for a unit to fall within a > >certain range of masses as I recall. Density then affects the volumn. > > > >But my point had to do with a 20 year old student's comprehension of a pint > >and a quart versus her comprehension of a liter. The blood was there merely > >to get the conversation started. > > > >By the way, I took the opportunity in class to point out that a puddle > >covering a square meter at a depth of 1 mm contains a liter. THAT got > >everyone's attention and even the instructor counted out the floor tiles to > >get a feel for that. A depth of 1 mm is probably not too bad an estimate of > >the depth of a pool of blood on a tile floor, I would think. > > > >Jim > > > >On Wednesday, 2003 October 22 13:22, Terry Simpson wrote: > >> James R. Frysinger wrote: > >> >he mentioned a "unit of blood" stating that it was roughly a pint or half > >> > >> of a quart. > >> > >> The amount in a unit is very variable because of how it is collected. > >> > >> See the sizes of bags come in rational metric sizes, at least for the > >> following supplier (I suspect that they all do): > >> www.baxterfenwal.com/jsp/products/wholeBloodFamily.jsp > >> > >> "a unit of blood (about 400 to 500 ml" > >> http://clinicalstudies.info.nih.gov/detail/A_1999-CC-0168.html > >> > >> "one unit of blood (450-500 ml)" > >> www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=113 > >>1 1689&dopt=Abstract > >> > >> "unit of donated blood (450 mL)" > >> www.cdc.gov/ncidod/eid/vol8no8/02-0025.htm > >> > >> > >> > >> There is a difference between units collected and units delivered (because > >> treatments reduce the volume). > >> http://blood-bank.egypt.com/professionals.html > > > >-- > > > >James R. Frysinger > >Lifetime Certified Advanced Metrication Specialist > >Senior Member, IEEE > > > >http://www.cofc.edu/~frysingj > >[EMAIL PROTECTED] > >[EMAIL PROTECTED] > > > >Office: > > Physics Lab Manager, Lecturer > > Dept. of Physics and Astronomy > > University/College of Charleston > > 66 George Street > > Charleston, SC 29424 > > 843.953.7644 (phone) > > 843.953.4824 (FAX) > > > >Home: > > 10 Captiva Row > > Charleston, SC 29407 > > 843.225.0805 > > > > > > ____________________________________________________________ > Get 25MB of email storage with Lycos Mail Plus! > Sign up today -- > http://www.mail.lycos.com/brandPage.shtml?pageId=plus ------- End of Original Message -------
