Keep in mind that any voltage, by definition, is a difference in electric potential energy between two points. So while we may say that a voltage source has a voltage of 1.5V, we are actually saying that the voltage between the negative and positive polarities of the voltage source is 1.5V.
Jacksonville, Texas. As of the census[1] of 2000, there were 13,868 people, 4,882 households, and 3,358 families residing in the city. The population density was 981.0 people per square mile (378.7/km2). There were 5,397 housing units at an average density of 381.8 per square mile (147.4/km2).
City of Jacksonville. Jacksonville is the largest city by population in the U.S. state of Florida, the 12th most populous city in the United States and the largest city by area in the contiguous United States. It is the county seat of Duval County, with which the city government consolidated in 1968.