Sciatica pain isn't a disorder, but rather a symptom of a larger problem, usually a bulging or herniated vertebral disk. This is the most common cause of sciatica nerve pain, but other spinal issues such as a tumor (yikes!) or injury (major hip surgery) could also be the cause. A condition called *Piriformis syndrome, can also cause sciatica. This is when the piriformis muscle tightens spasms, putting pressure on the nerve creating pain.
Confidence votes 7.8K. Reverse polarity is the opposite of normal polarity. Normal polarity in electronics is when you have the positive hooked up to the positive terminal and the negative to the negative terminal.Reverse polarity would be having the positive hooked up to the negative terminal and the negative to the positive terminal. The same concept can be used with magnets.everse polarity would be having the positive hooked up to the negative terminal and the negative to the positive terminal. The same concept can be used with magnets.
If you connect the electrode holder to the positive post and the ground clamp to the negative post the curren â¦ t flows to the base metal thru the ground clamp, across the arc, thru the electrode and holder and back to the machine. This is reverse polarity.f you reverse the polarity of the power supply, the rectifier is now in full conduction, across the supply, causing a dead short. This shunts any power away from the radio and blows the fuse in the line, thus protecting it.