2002-03-19 Just a guess, but I would say it is greater. Even though atmospheric pressure is 760 mmHg, the 130/80 mmHg is relative to the 760 mm. It is 130/80 greater that 760 mm. It is what is known as gage pressure, not absolute. If it were an absolute pressure, it would be 890/840 mmHg. If it were less, wouldn't the pressure of the air restrict your blood flow?
John ----- Original Message ----- From: "James R. Frysinger" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Cc: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Tuesday, 2002-03-19 23:05 Subject: [USMA:18924] Re: My stand for the Q Was:Re: Re: Short unitnames > Pat Naughtin wrote: > .... > > One problem with this use of a unit as a jargon is that the pressures cannot > > be easily compared with other pressure measures; for example is the pressure > > in your car tyres higher or lower than your blood pressure. > > Here's a poser for you. Is your blood pressure greater than or less > than atmospheric pressure? Think twice before you answer. > > Jim > > -- > Metric Methods(SM) "Don't be late to metricate!" > James R. Frysinger, CAMS http://www.metricmethods.com/ > 10 Captiva Row e-mail: [EMAIL PROTECTED] > Charleston, SC 29407 phone/FAX: 843.225.6789 >
