Abstract
Phonetic law was defined by the Neogrammarians in 1878 and it determines that a sound within the same dialect and in a specific period of time will always evolve in the same way in the same phonetic environment; this sound change does not admit more exceptions than the ones motivated by analogy and dialectal division.
In the decade of the 1870’s a group of German Indo-Europeanists who assumed the name of Neogrammarians (German Junggrammatiker) defined t…