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Hillar Rootare
Hillar Muidar Rootare (26 April 1928 – 2 October 2008) was a physical chemist and materials scientist best known for his work in the development of mercury porosimetry, high pressure liquid chromatography, and formulation of the Rootare-Prenzlow Equation. Biography Rootare was born and raised in Tallinn, Estonia, emigrated from Estonia to Helsinki, Finland, in 1944, and later to Visby, on the Swedish island of Gotland, and immigrated to New York City in the United States from Sweden in 1946. He attended Jersey City Junior College and Wagner College on Staten Island, New York, and received his Ph.D. from the University of Michigan in 1973. He was displaced several times during and after World War II, and as a result he spoke several languages, including English, Estonian, Finnish, Swedish, as well as, to a lesser degree, German and Russian. Hillar Rootare was the nephew of Estonian chess player Vidrik Rootare, several of whose games against the world-renowned International G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (element)
Mercury is a chemical element with the symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum ( ) from the Greek words, ''hydor'' (water) and ''argyros'' (silver). A heavy, silvery d-block A block of the periodic table is a set of elements unified by the atomic orbitals their valence electrons or vacancies lie in. The term appears to have been first used by Charles Janet. Each block is named after its characteristic orbital: s-blo ... element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature. Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by Mill (grinding), grinding natural cinnabar or synthetic mercuric sulfide. Mercury is used in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radium
Radium is a chemical element with the symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) upon exposure to air, forming a black surface layer of radium nitride (Ra3N2). All isotopes of radium are radioactive, the most stable isotope being radium-226 with a half-life of 1600 years. When radium decays, it emits ionizing radiation as a by-product, which can excite fluorescent chemicals and cause radioluminescence. Radium, in the form of radium chloride, was discovered by Marie and Pierre Curie in 1898 from ore mined at Jáchymov. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later. Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne through the electrolysis of radium chloride in 1911. In nature, radium is found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Master
FIDE titles are awarded by the international chess governing body FIDE (''Fédération Internationale des Échecs'') for outstanding performance. The highest such title is Grandmaster (GM). Titles generally require a combination of Elo rating and norms (performance benchmarks in competitions including other titled players). Once awarded, titles are held for life except in cases of fraud or cheating. Open titles may be earned by all players, while women's titles are restricted to female players. Many strong female players hold both open and women's titles. FIDE also awards titles for arbiters, organizers and trainers. Titles for correspondence chess, chess problem composition and chess problem solving are no longer administered by FIDE. A chess title, usually in an abbreviated form, may be used as an honorific. For example, Magnus Carlsen may be styled as "GM Magnus Carlsen". History The term "master" for a strong chess player was initially used informally. From the late 19th c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salme Rootare
Salme Rootare (March 26, 1913, Tallinn – October 21, 1987) was an Estonian chess master. She was fifteen times Estonian Champion (1945, 1948, 1949, 1950, 1954, 1956, 1957, 1960, 1962, 1964, 1966, 1969, 1970, 1971, and 1972). Salme tied for 4-5th at Plovdiv 1959 (Candidates Tournament, Women's World Chess Championship). She beat Ludmilla Rudenko, the all-USSR women's champ 1950-1953, at least once, in 1956 in recorded tournament play, when Rudenko, believing she was would be mated on her next move, resigned. It wasn't until later that both players realised that Rudenko had a saving move. She received the FIDE title of Woman International Master (WIM) in 1957. Salme was married to Vidrik Rootare Vidrik "Frits" Rootare (born in Tallinn, Estonia August 20, 1906 – March 5, 1981) was an Estonian chess player. His wife, Salme Rootare, was also an Estonian chess player, 15-time Estonian Champion and a Women's International Master (WIM). ..., known as Frits, and they had a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Keres
Paul Keres (; 7 January 1916 – 5 June 1975) was an Estonian chess grandmaster and chess writer. He was among the world's top players from the mid-1930s to the mid-1960s, and narrowly missed a chance at a World Chess Championship match on five occasions. As Estonia was repeatedly invaded and occupied during World War II, Keres was forced by the circumstances to represent the former Soviet Union (1940–41, 1944–75) and Nazi Germany (1941–44) in international tournaments. Keres won the AVRO 1938 chess tournament, which led to negotiations for a title match against the reigning World Champion Alexander Alekhine, but the match never took place due to the outbreak of World War II in 1939. Keres was runner-up in the Candidates Tournament on four consecutive occasions in 1953–1962. Due to these and other strong results, many chess historians consider Keres one of the greatest players in history, and the strongest player never to become world champion. " Super grandmaster" is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grandmaster (chess)
Grandmaster (GM) is a title awarded to chess players by the world chess organization FIDE. Apart from World Champion, Grandmaster is the highest title a chess player can attain. Once achieved, the title is held for life, though exceptionally it has been revoked for cheating. The title of Grandmaster, along with the lesser FIDE titles of International Master (IM) and FIDE Master (FM), is open to all players regardless of gender. The great majority of grandmasters are men, but 40 women have been awarded the GM title as of 2022, out of a total of about 2000 grandmasters. Since about the year 2000, most of the top 10 women have held the GM title. There is also a Woman Grandmaster title with lower requirements awarded only to women. There are also Grandmaster titles for composers and solvers of chess problems, awarded by the World Federation for Chess Composition (see List of grandmasters for chess composition). The International Correspondence Chess Federation (ICCF) awards the tit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vidrik Rootare
Vidrik "Frits" Rootare (born in Tallinn, Estonia August 20, 1906 – March 5, 1981) was an Estonian chess player. His wife, Salme Rootare, was also an Estonian chess player, 15-time Estonian Champion and a Women's International Master (WIM). In 1942, in one of his best showings, he came in third in an Estonian Chess Championship behind Johannes Türn, in second place, and Paul Keres, in first. In the 1930s, he played in the Estonian Club championships. In 1930 his team won the silver medal, with Leho Laurine, Nedsvedski, and Karring. Frits, as Vidrik was known—short for Friedrich, the German spelling of his name that he used prior to Estonian independence after World War I, was a contemporary and friend of Estonia's greatest—and one of the world's greatest-ever chess players, Paul Keres, and several of their games against each other in tournament play are anthologised in chess history books and on the World Wide Web. He was also a contemporary of such Estonian players as Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess
Chess is a board game for two players, called White and Black, each controlling an army of chess pieces in their color, with the objective to checkmate the opponent's king. It is sometimes called international chess or Western chess to distinguish it from related games, such as xiangqi (Chinese chess) and shogi (Japanese chess). The recorded history of chess goes back at least to the emergence of a similar game, chaturanga, in seventh-century India. The rules of chess as we know them today emerged in Europe at the end of the 15th century, with standardization and universal acceptance by the end of the 19th century. Today, chess is one of the world's most popular games, played by millions of people worldwide. Chess is an abstract strategy game that involves no hidden information and no use of dice or cards. It is played on a chessboard with 64 squares arranged in an eight-by-eight grid. At the start, each player controls sixteen pieces: one king, one queen, two rooks, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Language
Russian (russian: русский язык, russkij jazyk, link=no, ) is an East Slavic languages, East Slavic language mainly spoken in Russia. It is the First language, native language of the Russians, and belongs to the Indo-European languages, Indo-European language family. It is one of four living East Slavic languages, and is also a part of the larger Balto-Slavic languages. Besides Russia itself, Russian is an official language in Belarus, Kazakhstan, and Kyrgyzstan, and is used widely as a lingua franca throughout Ukraine, the Caucasus, Central Asia, and to some extent in the Baltic states. It was the De facto#National languages, ''de facto'' language of the former Soviet Union,1977 Soviet Constitution, Constitution and Fundamental Law of the Union of Soviet Socialist Republics, 1977: Section II, Chapter 6, Article 36 and continues to be used in public life with varying proficiency in all of the post-Soviet states. Russian has over 258 million total speakers worldwide. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Language
German ( ) is a West Germanic languages, West Germanic language mainly spoken in Central Europe. It is the most widely spoken and Official language, official or co-official language in Germany, Austria, Switzerland, Liechtenstein, and the Italy, Italian province of South Tyrol. It is also a co-official language of Luxembourg and German-speaking Community of Belgium, Belgium, as well as a national language in Namibia. Outside Germany, it is also spoken by German communities in France (Bas-Rhin), Czech Republic (North Bohemia), Poland (Upper Silesia), Slovakia (Bratislava Region), and Hungary (Sopron). German is most similar to other languages within the West Germanic language branch, including Afrikaans, Dutch language, Dutch, English language, English, the Frisian languages, Low German, Luxembourgish, Scots language, Scots, and Yiddish. It also contains close similarities in vocabulary to some languages in the North Germanic languages, North Germanic group, such as Danish lan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Language
Swedish ( ) is a North Germanic language spoken predominantly in Sweden and in parts of Finland. It has at least 10 million native speakers, the fourth most spoken Germanic language and the first among any other of its type in the Nordic countries overall. Swedish, like the other Nordic languages, is a descendant of Old Norse, the common language of the Germanic peoples living in Scandinavia during the Viking Era. It is largely mutually intelligible with Norwegian and Danish, although the degree of mutual intelligibility is largely dependent on the dialect and accent of the speaker. Written Norwegian and Danish are usually more easily understood by Swedish speakers than the spoken languages, due to the differences in tone, accent, and intonation. Standard Swedish, spoken by most Swedes, is the national language that evolved from the Central Swedish dialects in the 19th century and was well established by the beginning of the 20th century. While distinct regional varieties ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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