Uranus at opposition is just barely visible to the naked eye and was undoubtedly seen by the ancients. But it moves very slowly, about four degrees per year, so that its motion is not readily apparent. With no special reason to watch this particular dim star over the course of several months, none of the ancient records identify it as a planet.
Pulse (or the count of arterial pulse per minute) is equivalent to measuring the heart rate. The heart rate can also be measured by listening to the heart beat directly (auscultation), traditionally using a stethoscope and counting it for a minute. The radial pulse is commonly measured using three fingers.
Each subjectâs heart rate was tested by using two fingers to locate the subjectsâ pulse on their left wrist and counting the number of beats in a 30-second time period. Then, the pulse rate was multiplied by 2 to get the beats per minute, the standard measurement of heart rate.