Phonological history of Old English Proto-Germanic phonology and Old English phonology. Proto-Germanic had two allophones each: stops and fricatives . The stops occurred: By West Germanic times, was pronounced as a stop in all positions. The fricative allophones are sometimes indicated in reconstructed forms to make it easier to understand the development of Old English consonants. Old English retained the allophony , which in case of palatalization (see below) became . Later, non-palatalized became word-initially. The allophony was broken when merged with , the voiced allophone of . A number of phonological processes affected Old English in the period before the earliest documentation. The processes
Eureka (word) Fermat polygonal number theorem. Eureka (word) Eureka () is an interjection used to celebrate a discovery or invention. It is a transliteration of an exclamation attributed to Ancient Greek mathematician and inventor Archimedes. "Eureka" comes from the Ancient Greek word "heúrēka", meaning "I found (it)", which is the first person singular perfect indicative active of the verb "heuriskō" "I find". It is closely related to heuristic, which refers to experience-based techniques for problem solving, learning, and discovery. The accent of the English word is on the second syllable, following Latin rules of accent, which require that a penult (next-to-last syllable)