Causes of Rib Cage Pain. The most common causes of rib cage pain are a pulled muscle or bruised ribs. Other causes of rib cage pain are: 1  broken ribs. 2  injuries to the chest. 3  rib fracture. 4  diseases that affect the bones, such as osteoporosis. 5  inflamed lining of the lungs. 6  muscle spasms. 7  inflamed rib cartilage.ther causes of rib cage pain are: 1  broken ribs. 2  injuries to the chest. 3  rib fracture. 4  diseases that affect the bones, such as osteoporosis. 5  inflamed lining of the lungs. 6  muscle spasms.
In electronics and communications, the decibel (abbreviated as dB, and also as db and DB) is a logarithmic expression of the ratio between two signal power, voltage, or current levels.
As dB is a relationship between two signals we'll first need to establish a reference point to which we can reference our dB scale. A handy reference is dBm which is the signal level in dB relative to 1mW. 0dBm is simply when the injected voltage causes a load to dissipate 1mW. But this still does not give us a voltage, multimeters cannot measure power.