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.
dBm, Power. dBm is an abbreviation for the power ratio in decibel (dB) of the measured power referenced to one milliwatt (mW). It is used in radio, microwave and fiber optic work as a convenient measure of absolute power because of its capability to express both very large and very small values in a short form. dBm (or dBmW) and dBW are independent of impedance (as opposed to dBV which is dependent, for example). Read more. I want to convert: