Electrical resistivity and conductivity results in the important concept of "quasineutrality", which says the density of negative charges is approximately equal to the density of positive charges over large volumes of the plasma ("n" = <Z>"n"), but on the scale of the Debye length there can be charge imbalance. In the special case that "double layers" are formed, the charge separation can extend some tens of Debye lengths. The magnitude of the potentials and electric fields must be determined by means other than simply finding the net charge density. A common example is to assume that the electrons satisfy the Boltzmann relation: Differentiating this
Negative and positive rights public debate between conservative ethicist Wesley J. Smith and bioethicist Jacob M. Appel. In discussing "Baxter v. Montana", Appel has written: Smith replies that this is "taking the duty to die and transforming it into a duty to kill", which he argues "reflects a profound misunderstanding of the government’s role". Presumably, if a person has positive rights it implies that other people have positive duties (to take certain actions); whereas negative rights imply that others have negative duties (to avoid certain other actions). Philosopher Henry Shue is skeptical; he believes that all rights (regardless of whether they seem more "negative"