An electric arc between two nails. An electric arc or arc discharge is an electrical breakdown of a gas that produces an ongoing plasma discharge, resulting from a current through normally nonconductive media such as air.n electric arc differs from a glow discharge in that the current density is quite high, and the voltage drop within the arc is low; at the cathode, the current density can be as high as one megaampere per square centimeter. An electric arc has a non-linear relationship between current and voltage.
According to The Bureau of Labor Statistics, the states hiring the most ultrasound techs, in relation to overall population, were as follows in 2008: 1  Florida. 2  Connecticut. 3  New Jersey. 4  Alabama. Tennessee.
The states with the highest ultrasound technician salaries include California, Oregon, Washington, Alaska, and Rhode Island. In California the average mean income for an ultrasound technician is $86,550 and the hourly wage is $41.61.he average ultrasound technician salary for these workers was $67,170 with an average hourly wage of $32.29. The median ultrasound technician salary separating the top and bottom half of workers was $66,410, closely matching the national average.