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.
She says regular blood pressure checks should start at age 3, but says that even younger children can have hypertension and should be treated for it. An adult is considered to have high blood pressure when the top number of a blood pressure reading (systolic pressure) is more than 140 mm Hg or when the lower number of a blood pressure reading is more than 90 mm Hg (diastolic pressure).