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13 hours ago · The vacuum ultraviolet (V‑UV) band (100–200 nm) can be generated by non-linear 4 wave mixing in gases by sum or difference frequency mixing of 2 or more longer wavelength lasers. The generation is generally done in gasses (e.g. krypton, hydrogen which are two-photon resonant near 193 nm) [42] or metal vapors (e.g. magnesium).
13 hours ago · Operation Barbarossa (German: Unternehmen Barbarossa; Russian: Операция Барбаросса, romanized: Operatsiya Barbarossa) was the invasion of the Soviet Union by Nazi Germany and many of its Axis allies, starting on Sunday, 22 June 1941, during the Second World War. It was the largest and costliest land offensive in human history ...
- 22 June 1941 – 7 January 1942, (6 months, 2 weeks and 2 days)
- Axis captured approximately 600,000 square kilometres of Soviet territory but failed to reach the A-A line
- Soviet Victory, Axis operational failure
13 hours ago · Maize Includes male and female flowers Conservation status Least Concern (IUCN 3.1) Scientific classification Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Monocots Clade: Commelinids Order: Poales Family: Poaceae Subfamily: Panicoideae Genus: Zea Species: Z. mays Binomial name Zea mays L. Maize (Zea mays), also known as corn in North American and Australian English, is a ...
13 hours ago · Chennai Super Kings ( CSK) is an Indian professional cricket franchise based in Chennai, Tamil Nadu. The team competes in the Indian Premier League (IPL) and was one of the eight franchises incorporated when the league was established in 2008. The team plays its home matches at the M. A. Chidambaram Stadium in Chennai and is owned by Chennai ...
13 hours ago · The Iowa class was a class of six fast battleships ordered by the United States Navy in 1939 and 1940. They were initially intended to intercept fast capital ships such as the Japanese Kongō class and serve as the "fast wing" of the U.S. battle line. [3] [4] The Iowa class was designed to meet the Second London Naval Treaty 's "escalator ...
13 hours ago · New Caledonia (/ ˌ k æ l ɪ ˈ d oʊ n i ə / ⓘ KAL-ih-DOH-nee-ə; French: Nouvelle-Calédonie [nuvɛl kaledɔni] ⓘ) is a sui generis collectivity of overseas France in the southwest Pacific Ocean, south of Vanuatu, about 1,210 km (750 mi) east of Australia, and 17,000 km (11,000 mi) from Metropolitan France.
13 hours ago · Name Map of northern South America showing the extent of the Guyanas region. According to the Oxford English Dictionary, the name "Guyana" is a name. The addition of the adjective "French" in most languages other than French is rooted in colonial times, when five such colonies (The Guianas) had been named along the coast, subject to differing powers: namely (from west to east) Spanish Guiana ...
