However, that was not an electric arc as this phenomenon is considered by the modern science: This is evidently the description, not of an arc, but of a spark. For the essence of an arc is that it should be continuous, and that the poles should not be in contact after it has once started.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.
Ulm(ProperNoun) A city in Baden-Wu00FCrttemberg, Germany. Ulm. Ulm is a city in the federal German state of Baden-WÃ¼rttemberg, situated on the River Danube. The city, whose population is estimated at 120,000, forms an urban district of its own and is the administrative seat of the Alb-Donau district.
Altona, Hamburg. Haderslev County. The Province of Schleswig-Holstein (German: Provinz Schleswig-Holstein, pronounced [ËÊleËsvÉªÃ§ ËhÉlÊtaÉªÌ¯n] ( listen)) was a province of the Kingdom of Prussia and the Free State of Prussia from 1868 to 1946.