What is a spectrometer? A spectrometer is an tool commonly used by astronomers which splits the light collected by a telescope into its colors. This allows astronomers see the details in the light from space. Astronomers know how to get a lot of special information about a space object by studying its light. By using spectrometers, we can find out the temperature of an object in space, learn which direction it is traveling, find out how fast it is going, figure out its weight and even find out what it is made of.
Negative inotropes weaken the heart's contractions and slow the heart rate. These medicines are used to treat high blood pressure (hypertension), chronic heart failure, abnormal heart rhythms (arrhythmias), and chest pain (angina).
1 During a heart attack, blood flow is affected in the heart, and heart tissue can begin to lose oxygen and die. 2  This tissue will not conduct electricity as well, which can cause an abnormal EKG. 3  Ischemia, or lack of blood flow, may also cause an abnormal EKG. 4  Heart rate abnormalities. Ischemia, or lack of blood flow, may also cause an abnormal EKG. 2  Heart rate abnormalities. 3  A typical human heart rate is between 60 and 100 beats per minute. 4  An EKG can determine if the heart is beating too fast or too slow.