Portions of the turbine also volitized; idling at eight thousand rpm, it became unstable. Later tests would put the rim through check-out tests to as high as 1.59 gee, but normal operation had been fixed at two rpm. The out-of-balance fan, turning at close to 35,000 rpm, flew to pieces and the air cushion vanished. Code Three Rick Raphael Meanwhile, they kept up a jabber that sounded like a 33-1/3 rpm record being played 78 rpm. Brknk's Bounty Gerald Allan Sohl British Dictionary definitions for rpm Expand
The bottom number, called the diastolic pressure, is the measurement as the heart relaxes between beats. Normal blood pressure is a systolic pressure of less than 120 millimeters of mercury (mm Hg) and a diastolic pressure of less than 80 mm Hg, or 120/80 mm Hg, according to the American Heart Association (AHA).Having a blood pressure greater than 140/90 mm Hg is considered high blood pressure or hypertension.A blood pressure level between normal and hypertension, is called prehypertension, meaning it is higher than normal, but not high enough to be considered hypertension.aving a blood pressure greater than 140/90 mm Hg is considered high blood pressure or hypertension. A blood pressure level between normal and hypertension, is called prehypertension, meaning it is higher than normal, but not high enough to be considered hypertension.
Ideally, we should all have a blood pressure below 120 over 80 (120/80). This is the ideal blood pressure for people wishing to have good health. At this level, we have a much lower risk of heart disease or stroke.ost adults in the UK have blood pressure readings in the range from 120 over 80 (120/80) to 140 over 90 (140/90). If your blood pressure is within this range, you should be taking steps to bring it down or to stop it rising any further. Our five top tips will show you how.