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Janusz Andrzej Zakrzewski
Janusz Andrzej Zakrzewski (23 July 1932 in Kraków – 26 October 2008 in Warsaw) was a Polish physicist. He was a professor of the University of Warsaw (since 1971), member of the Warsaw Scientific Society (since 1984), Polish Academy of Sciences (1986), Polish Academy of Learning. He served as president of the Polish Physical Society between 1987–1991. Zakrzewski was a researcher and author of works about high-energy nuclear physics and elementary particles. He participated in discovery of heavy atomic nucleus (1961) and double hypernucleus (1963). He was a co-author (with Andrzej Kajetan Wróblewski Andrzej Kajetan Wróblewski (Polish pronunciation: ''Vrooblevski'', born 7 August 1933 in Warsaw) – Polish experimental physicist, ordinary professor doctor habilitatus (since 1971), dean of the Physics Department Warsaw University (1986–198 ...) of handbook ''Wstęp do fizyki'' ("Introduction to physics"). Notable works * * * References * * 1932 births Scienti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kraków
Kraków (), or Cracow, is the second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city dates back to the seventh century. Kraków was the official capital of Poland until 1596 and has traditionally been one of the leading centres of Polish academic, economic, cultural and artistic life. Cited as one of Europe's most beautiful cities, its Old Town with Wawel Royal Castle was declared a UNESCO World Heritage Site in 1978, one of the first 12 sites granted the status. The city has grown from a Stone Age settlement to Poland's second-most-important city. It began as a hamlet on Wawel Hill and was reported by Ibrahim Ibn Yakoub, a merchant from Cordoba, as a busy trading centre of Central Europe in 985. With the establishment of new universities and cultural venues at the emergence of the Second Polish Republic in 1918 and throughout the 20th century, Kraków reaffirmed its role as a major national academic and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypernucleus
A hypernucleus is similar to a conventional atomic nucleus, but contains at least one hyperon in addition to the normal protons and neutrons. Hyperons are a category of baryon particles that carry non-zero strangeness quantum number, which is conserved by the strong and electromagnetic interactions. A variety of reactions give access to depositing one or more units of strangeness in a nucleus. Hypernuclei containing the lightest hyperon, the lambda (Λ), tend to be more tightly bound than normal nuclei, though they can decay via the weak force with a mean lifetime of around . Sigma (Σ) hypernuclei have been sought, as have doubly-strange nuclei containing xi baryons (Ξ) or two Λ's. Nomenclature Hypernuclei are named in terms of their atomic number and baryon number, as in normal nuclei, plus the hyperon(s) which are listed in a left subscript of the symbol, with the caveat that atomic number is interpreted as the total charge of the hypernucleus, including charged hypero ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polish Nuclear Physicists
Polish may refer to: * Anything from or related to Poland, a country in Europe * Polish language * Poles, people from Poland or of Polish descent * Polish chicken *Polish brothers (Mark Polish and Michael Polish, born 1970), American twin screenwriters Polish may refer to: * Polishing, the process of creating a smooth and shiny surface by rubbing or chemical action ** French polishing, polishing wood to a high gloss finish * Nail polish * Shoe polish * Polish (screenwriting), improving a script in smaller ways than in a rewrite See also * * * Polonaise (other) A polonaise ()) is a stately dance of Polish origin or a piece of music for this dance. Polonaise may also refer to: * Polonaises (Chopin), compositions by Frédéric Chopin ** Polonaise in A-flat major, Op. 53 (french: Polonaise héroïque, lin ... {{Disambiguation, surname Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientists From Kraków
A scientist is a person who conducts scientific research to advance knowledge in an area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science. Though Thales (circa 624-545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods,Frank N. Magill''The Ancient World: Dictionary of World Biography'', Volume 1 Routledge, 2003 it was not until the 19th century that the term ''scientist'' came into regular use after it was coined by the theologian, philosopher, and historian of science William Whewell in 1833. In modern times, many scientists have advanced degrees in an area of science and pursue careers in various sectors of the economy such as academia, industry, government, and nonprofit environments.'''' History The roles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1932 Births
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WIEM Encyclopedia
WIEM Encyklopedia (full name in pl, Wielka Interaktywna Encyklopedia Multimedialna - "Great Interactive Multimedia Encyclopedia"; in Polish, ''wiem'' also means 'I know') is a Polish Internet encyclopedia. The first printed edition was released in mid-1990s, with the second in 1998, it contained about 66,000 entries and various multimedia add-ons. It was released online in 2000 by the Polish web portal Onet.pl Onet.pl is one of the largest Polish web portals. It is owned by the Kraków-based Grupa Onet.pl S.A. It was founded in 1996 by Optimus company. According to Alexa rankings, as of October 2017, it was the 45th most popular website worldwide an ... on the basis of ''Popularna Encyklopedia Powszechna i Multimedialna'' ("Popular General and Multimedia Encyclopedia"). From 2004 to 2 March 2006 it was not free, however before and after it was free to access. As of the 9th online edition in 2006, it contains 125,000 entries. External links Homepage Polish online encycloped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internetowa Encyklopedia PWN
''Internetowa encyklopedia PWN'' (Polish for ''Internet PWN Encyclopedia'') is a free online Polish-language encyclopedia published by Wydawnictwo Naukowe PWN Wydawnictwo Naukowe PWN (''Polish Scientific Publishers PWN''; until 1991 ''Państwowe Wydawnictwo Naukowe'' - ''National Scientific Publishers PWN'', PWN) is a Polish book publisher, founded in 1951, when it split from the Wydawnictwa Szkolne i .... It contains some 80,000 entries and 5,000 illustrations. External links ''Internetowa encyklopedia PWN'' Online encyclopedias Polish online encyclopedias Polish Scientific Publishers PWN books {{online-encyclopedia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polish Scientific Publishers PWN
Wydawnictwo Naukowe PWN (''Polish Scientific Publishers PWN''; until 1991 ''Państwowe Wydawnictwo Naukowe'' - ''National Scientific Publishers PWN'', PWN) is a Polish book publisher, founded in 1951, when it split from the Wydawnictwa Szkolne i Pedagogiczne. Adam Bromberg, who was the enterprise's director between 1953 and 1965, made it into communist Poland's largest publishing house. The printing house is best known as a publisher of encyclopedias, dictionaries and university handbooks. It is the leading Polish provider of scientific, educational and professional literature as well as works of reference. It authored the Wielka Encyklopedia Powszechna PWN, by then the largest Polish encyclopedia, as well as its successor, the Wielka Encyklopedia PWN, which was published between 2001 and 2005. There is also an online PWN encyclopedia – Internetowa encyklopedia PWN. Initially state-owned, since 1991 it has been a private company. The company is a member of International Associa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrzej Kajetan Wróblewski
Andrzej Kajetan Wróblewski (Polish pronunciation: ''Vrooblevski'', born 7 August 1933 in Warsaw) – Polish experimental physicist, ordinary professor doctor habilitatus (since 1971), dean of the Physics Department Warsaw University (1986–1989), Rector of the Warsaw University (1989–1993), President of the Academic Council of the Institute for the History of Science, Polish Academy of Sciences. Member of the PAS (since 1976), Warsaw Scientific Society (since 1983), Polish Physical Society and Polish Astronomical Society. Scholarly activity Andrzej Kajetan Wróblewski works at the Institute of Experimental Physics of the Physics Department, Warsaw University. He specializes in elementary particle physics (high energy physics) i.e. Soft Hadron Physics (1990), New AMY and DELPHI multiplicity data and the log-normal distribution (with co-authors; 1990), Genesis of the lognormal multiplicity distribution in the e² e²- collisions and other stochastic processes (with co-author ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Nucleus
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment. After the discovery of the neutron in 1932, models for a nucleus composed of protons and neutrons were quickly developed by Dmitri Ivanenko and Werner Heisenberg. An atom is composed of a positively charged nucleus, with a cloud of negatively charged electrons surrounding it, bound together by electrostatic force. Almost all of the mass of an atom is located in the nucleus, with a very small contribution from the electron cloud. Protons and neutrons are bound together to form a nucleus by the nuclear force. The diameter of the nucleus is in the range of () for hydrogen (the diameter of a single proton) to about for uranium. These dimensions are much smaller than the diameter of the atom itself (nucleus + electron cloud), by a factor of about 26,634 (uranium atomic radiu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warsaw
Warsaw ( pl, Warszawa, ), officially the Capital City of Warsaw,, abbreviation: ''m.st. Warszawa'' is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland, and its population is officially estimated at 1.86 million residents within a greater metropolitan area of 3.1 million residents, which makes Warsaw the 7th most-populous city in the European Union. The city area measures and comprises 18 districts, while the metropolitan area covers . Warsaw is an Alpha global city, a major cultural, political and economic hub, and the country's seat of government. Warsaw traces its origins to a small fishing town in Masovia. The city rose to prominence in the late 16th century, when Sigismund III decided to move the Polish capital and his royal court from Kraków. Warsaw served as the de facto capital of the Polish–Lithuanian Commonwealth until 1795, and subsequently as the seat of Napoleon's Duchy of Warsaw. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elementary Particle
In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. Particles currently thought to be elementary include electrons, the fundamental fermions ( quarks, leptons, antiquarks, and antileptons, which generally are matter particles and antimatter particles), as well as the fundamental bosons ( gauge bosons and the Higgs boson), which generally are force particles that mediate interactions among fermions. A particle containing two or more elementary particles is a composite particle. Ordinary matter is composed of atoms, once presumed to be elementary particles – ''atomos'' meaning "unable to be cut" in Greek – although the atom's existence remained controversial until about 1905, as some leading physicists regarded molecules as mathematical illusions, and matter as ultimately composed of energy. Subatomic constituents of the atom were first identified in the early 1930s; the electron and the proto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
