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

Philippe Chaperon (1823–1906) was a French painter and scenic designer, particularly known for his work at the Paris Opera. He produced stage designs for the premieres of numerous 19th-century operas, including Verdi's Don Carlos and Aida, Massenet's Le Cid, Saint-Saëns's Henry VIII, part two of Berlioz's Les Troyens, and the first performances in France of Verdi's Otello and Rigoletto and Wagner's Tannhäuser. His painting style was influenced by his architecture studies, such as his debut work exhibited at the Paris Salon, Ruines d'un Temple dans l'Inde. This photographic portrait of Chaperon, taken around 1900, was produced by the studio (a.k.a. atelier) of the French photographer Nadar.

Today's featured article

Les Holden (6 March 1895 – 18 September 1932) was a fighter ace of World War I. He joined the Australian Light Horse in May 1915, serving in Egypt and France. In December 1916, he volunteered for the Australian Flying Corps and qualified as a pilot. As a member of No. 2 Squadron, he gained the sobriquets "Lucky Les" and "the homing pigeon" after a series of incidents where he limped back to base in bullet-riddled aircraft. Holden was awarded the Military Cross, achieved five aerial victories, finishing the war as an instructor with No. 6 (Training) Squadron in England, earning the Air Force Cross. After leaving the Australian Flying Corps in 1919, he became a manager at Holden's Motor Body Builders. He joined the part-time Citizen Air Force before starting an air service as a commercial pilot. In 1929, he located Charles Kingsford Smith and Charles Ulm in the north-west Australian desert after the pair were reported missing. Holden was killed in a passenger plane crash in Australia. (Full article...)