A typical ECG in AF shows no P waves and an irregular ventricular rate. AF is often treated with medications to slow the heart rate to a near normal range (known as rate control) or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can also be used to convert AF to a normal sinus rhythm and is often used emergently if the person is unstable.
How does a water tower work? Water towers provide extra water storage for a town's water supply. They hold about a day's worth of water, so if the town's pumps fail (like during a power outage), the water tower acts as a backup water supply.
Basic Mechanics of How Home Water Softeners Work. 1  The body of a water softener is a tank filled with resin beads that are covered with sodium ions. 2  As hard water passes through, the resin beads act like a magnet attracting the calcium and magnesium ions, or hardness, in exchange for the sodium ions.