Verner's Law

Verner's law, stated by Karl Verner in 1875, describes a historical sound change in the Proto-Germanic language whereby voiceless fricatives *f, *þ, *s, *h, *, when immediately following an unstressed syllable in the same word, underwent voicing and became respectively the fricatives *b, *d, *z, *g, *.

(In Proto-Germanic, voiced fricatives * were allophones of their corresponding voiced plosives * when they occurred between vowels, semivowels and liquids, so we write them here as *b, *d, *g. But the situations where Verner's law applied resulted in fricatives in these very circumstances, so we understand these phonemes as fricatives in this context.)

Read more about Verner's Law:  The Problem, The Solution, Significance, Dating The Change Described By Verner's Law, Newer Considerations Regarding The Dating

Famous quotes containing the word law:

    I had often stood on the banks of the Concord, watching the lapse of the current, an emblem of all progress, following the same law with the system, with time, and all that is made ... and at last I resolved to launch myself on its bosom and float whither it would bear me.
    Henry David Thoreau (1817–1862)