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.
Use the blood pressure chart below to see what your blood pressure means. The blood pressure chart is suitable for adults of any age. (The level for high blood pressure does not change with age.) Blood pressure readings have two numbers, for example 140/90mmHg. The top number is your systolic blood pressure. (The highest pressure when your heart beats and pushes the blood round your body.) The bottom one is your diastolic blood pressure. (The lowest pressure when your heart relaxes between beats.) The blood pressure chart below shows ranges of high, low and healthy blood pressure readings.