N,N-Diethyl-meta-toluamide, also called DEET (/diËt/) or diethyltoluamide, is the most common active ingredient in insect repellents. It is a slightly yellow oil intended to be applied to the skin or to clothing, and provides protection against mosquitoes, ticks, fleas, chiggers, leeches, and many biting insects. 1 History.
r n km.t in hieroglyphs. Written records of the ancient Egyptian language have been dated from about 3200 BC. Egyptian is part of the Afro-Asiatic group of languages and is related to Berber and Semitic (languages such as Arabic, Amharic, Tigrinya and Hebrew).The language survived until the 5th century AD in the form of Demotic and until the Middle Ages in the form of Coptic.gyptian is one of the oldest recorded languages known. The national language of modern day Egypt is Egyptian Arabic, which gradually replaced Coptic Egyptian as the language of daily life in the centuries after the Muslim conquest of Egypt. Coptic is still used as a liturgical language by the Coptic Church.
A few come to mind: The Rosetta Stone. It is a stone tablet found in Egypt that had the same text in 3 different languages: Greek, demotic, and Egyptian hieroglyphics. It was without a doubt the most important factor in decoding the ancient Egyptian written language. It was originally made in 196 BC, and re-discovered in 1799.