Gulmammad

Contributions
• Sokolov-Ternov effect • Hamilton's principal function • Hamilton's characteristic function • Experimental observation of Hawking radiation • Particle number operator* • Self-organization in biology* • Aleksandr Chudakov • Alexey Andreevich • A. P. Balachandran • Igor Ternov • Mark Trodden • Stanislav Mikheyev • Alexei Smirnov* • Shamil Asgarov • Seifallah Randjbar-Daemi • Habil Aliyev • Ahmad Bakikhanov • Aşık Khanlar • Suleyman Valiyev • Heino Finkelmann • Tom Lubensky • Lubna al-Hussein • Sheylanli tribe • Sheylanli • Boyat • Ashaghy Aylis • Agbash • International Liquid Crystal Society • British Liquid Crystal Society • International Centre for Theoretical Physics* • ANS Group of Companies • ANS TV • ANS ChM • Khudafarin Bridges • Azerbaijan Time • Yemen Türküsü • Jujalarim • Föppl–von Kármán equations

* Didn't create but significantly contributed

Picture of the day

Holger Drachmann (1846–1908) was a Danish poet, dramatist and painter. He was a member of the Skagen artistic colony and became a figure of the Scandinavian Modern Breakthrough Movement. Born in Copenhagen, he studied at the Royal Danish Academy of Fine Arts, going on to achieve fame for his painting of seascapes and ships in storms. He began writing poetry in 1872; his most famous work is the 1877 collection of poems Sange ved Havet (Songs of the Sea).

Today's featured article Cyfeilliog (died c. 927) was a bishop in south-east Wales. The location and extent of his diocese is uncertain, but lands granted to him are mainly close to Caerwent, suggesting that his diocese covered Gwent, possibly extending into Ergyng (now south-west Herefordshire). He is recorded in charters dating from the mid-880s to the early tenth century. In 914 he was captured by the Vikings and ransomed by Edward the Elder, King of the Anglo-Saxons, for 40 pounds of silver. Edward's assistance is regarded by historians as evidence that he inherited the overlordship of his father, Alfred the Great, over the south-east Welsh kingdoms. Cyfeilliog is probably the author of a cryptogram (encrypted text) which was added as a marginal note to the ninth-century collection of poetry known as the Juvencus Manuscript. The twelfth-century Book of Llandaff records his death in 927, but some historians are sceptical as they think that this date is late for a bishop active in the 880s. (Full article...)