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 A slow heart rate (bradycardia) can decrease the amount of blood pumped by the heart. 2  The resting heart rate for a healthy adult is between 60 and 100 beats/minute. 3  Bradycardia (resting heart rates slower than 60 beats/minute) does not always cause low blood pressure. The resting heart rate for a healthy adult is between 60 and 100 beats/minute. 2  Bradycardia (resting heart rates slower than 60 beats/minute) does not always cause low blood pressure. 3  In fact, some highly trained athletes can have resting heart rates in the 40s and 50s (beats per minute) without any symptoms.