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Chaim Selig Slonimski
Ḥayyim Selig ben Ya'akov Slonimski () (March 31, 1810 – May 15, 1904), also known by Hebrew abbreviations, his acronym ḤaZaS (), was a Hebrew publisher, mathematician, astronomer, inventor, science writer, and rabbi. He was among the first to write books on science for a broad Jewish audience, and was the founder of ''Ha-Tsfira'', the first Hebrew-language newspaper with an emphasis on the sciences. Biography Ḥayyim Selig Slonimski was born in Białystok, Bialystok, in the Grodno Governorate of the Russian Empire (present-day Poland), the oldest son of Rabbi Avraham Ya'akov Bishka and Leah (Neches) Bishka. His father belonged to a family of rabbis, writers, publishers and printers, and his mother was the daughter of Rabbi Yeḥiel Neches, an owner of a well-known Beth midrash, beit midrash in Bialystok. Slonimski had a traditional Jewish upbringing and Talmudic education; without a formal secular education, Slonimski taught himself mathematics, astronomy, and foreign langua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Białystok
Białystok is the largest city in northeastern Poland and the capital of the Podlaskie Voivodeship. It is the tenth-largest city in Poland, second in terms of population density, and thirteenth in area. Białystok is located in the Białystok Uplands of the Podlachian Plain on the banks of the Biała River, by road northeast of Warsaw. It has historically attracted migrants from elsewhere in Poland and beyond, particularly from Central and Eastern Europe. This is facilitated by the nearby border with Belarus also being the eastern border of the European Union, as well as the Schengen Area. The city and its adjacent municipalities constitute Metropolitan Białystok. The city has a warm summer continental climate, characterized by warm summers and long frosty winters. Forests are an important part of Białystok's character and occupy around (18% of the administrative area of the city) which places it as the fifth-most forested city in Poland. The first settlers arrived in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grodno Governorate
The Grodno Governorate, (russian: Гро́дненская губе́рнiя, translit=Grodnenskaya guberniya, pl, Gubernia grodzieńska, be, Гродзенская губерня, translit=Hrodzenskaya gubernya, lt, Gardino gubernija, uk, Гродненська губернія) was a governorate () of the Russian Empire. It was part of the Vilna Governorate-General and Northwestern Krai. Overview Grodno, a western province or governorate of the former Russian Empire, currently located in Belarus, was situated between about 52° to 54° N latitude and 21° to 24° E longitude, and bounded N by Vilna E by Minsk S by Volhynia and W by the former kingdom of Poland. Its land size was . The province was a wide plain in parts, very swampy and covered with large pine tree forests. Of these, that of Białowieża in the district of comprising a circuit of over deserves notice. There, bisons were preserved. The navigable rivers are Niemen, Bug, Narev, and Bobra, the most import ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crelle's Journal
''Crelle's Journal'', or just ''Crelle'', is the common name for a mathematics journal, the ''Journal für die reine und angewandte Mathematik'' (in English: ''Journal for Pure and Applied Mathematics''). History The journal was founded by August Leopold Crelle (Berlin) in 1826 and edited by him until his death in 1855. It was one of the first major mathematical journals that was not a proceedings of an academy. It has published many notable papers, including works of Niels Henrik Abel, Georg Cantor, Gotthold Eisenstein, Carl Friedrich Gauss and Otto Hesse. It was edited by Carl Wilhelm Borchardt from 1856 to 1880, during which time it was known as ''Borchardt's Journal''. The current editor-in-chief is Rainer Weissauer (Ruprecht-Karls-Universität Heidelberg) Past editors * 1826–1856 August Leopold Crelle * 1856–1880 Carl Wilhelm Borchardt * 1881–1888 Leopold Kronecker, Karl Weierstrass * 1889–1892 Leopold Kronecker * 1892–1902 Lazarus Fuchs * 1903–1928 Kurt Hens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pale Of Settlement
The Pale of Settlement (russian: Черта́ осе́длости, '; yi, דער תּחום-המושבֿ, '; he, תְּחוּם הַמּוֹשָב, ') was a western region of the Russian Empire with varying borders that existed from 1791 to 1917 in which permanent residency by Jews was allowed and beyond which Jewish residency, permanent or temporary, was mostly forbidden. Most Jews were still excluded from residency in a number of cities within the Pale as well. A few Jews were allowed to live outside the area, including those with university education, the ennobled, members of the most affluent of the merchant guilds and particular artisans, some military personnel and some services associated with them, including their families, and sometimes their servants. The archaic English term ''pale'' is derived from the Latin word ', a stake, extended to mean the area enclosed by a fence or boundary. The Pale of Settlement included all of modern-day Belarus, Lithuania and Moldova, mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Academy Of Sciences
The Russian Academy of Sciences (RAS; russian: Росси́йская акаде́мия нау́к (РАН) ''Rossíyskaya akadémiya naúk'') consists of the national academy of Russia; a network of scientific research institutes from across the Russian Federation; and additional scientific and social units such as libraries, publishing units, and hospitals. Peter the Great established the Academy (then the St. Petersburg Academy of Sciences) in 1724 with guidance from Gottfried Leibniz. From its establishment, the Academy benefitted from a slate of foreign scholars as professors; the Academy then gained its first clear set of goals from the 1747 Charter. The Academy functioned as a university and research center throughout the mid-18th century until the university was dissolved, leaving research as the main pillar of the institution. The rest of the 18th century continuing on through the 19th century consisted of many published academic works from Academy scholars and a few Ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruble
The ruble (American English) or rouble (Commonwealth English) (; rus, рубль, p=rublʲ) is the currency unit of Belarus and Russia. Historically, it was the currency of the Russian Empire and of the Soviet Union. , currencies named ''ruble'' in circulation include the Belarusian ruble (BYN, Rbl) in Belarus and the Russian ruble (RUB, ₽) in Russia. Additionally, the Transnistrian ruble is used in Transnistria, an unrecognized breakaway province of Moldova. These currencies are subdivided into one hundred Kopek, kopeks. No kopek is currently formally subdivided, although denga, ''denga'' (½ kopek) and polushka, ''polushka'' (½ denga, thus ¼ kopek) were minted until the 19th century. Historically, the grivna, ruble and denga were used in Russia as measurements of weight. In 1704, as a result of monetary reforms by Peter the Great, the ruble became the first Decimalisation, decimal currency. The silver ruble was used until 1897 and the gold ruble was used until 1917. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slonimski's Theorem
Slonimski's Theorem is an observation by Hayyim Selig Slonimski that the sequence of carry digits in a multiplication table is the Farey sequence. This observation allowed Slonimski to create very compact multiplication tables for use in hand calculations. He received several awards for different devices for presenting these tables. The most common format were Joffe Bars similar to Napier's Rods Napier's bones is a manually-operated calculating device created by John Napier of Merchiston, Scotland for the calculation of products and quotients of numbers. The method was based on lattice multiplication, and also called ''rabdology'', a word .... Joffe Bars were popular in Eastern Europe in the late 19th and early 20th century. References *. Provides a derivation of Slonimski's theorem, and some details on the calculating machine. *. Provides a complete set of tables. *{{citation, mr=3111378 , last=Monnier, first= Valéry, last2=Szrek, first2= Walter, last3= Zalewski, first3= Janu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photo Of Hayyim Selig Slonimski, Polin Museum
A photograph (also known as a photo, image, or picture) is an image created by light falling on a photosensitive surface, usually photographic film or an electronic image sensor, such as a CCD or a CMOS chip. Most photographs are now created using a smartphone/camera, which uses a lens to focus the scene's visible wavelengths of light into a reproduction of what the human eye would see. The process and practice of creating such images is called photography. Etymology The word ''photograph'' was coined in 1839 by Sir John Herschel and is based on the Greek φῶς (''phos''), meaning "light," and γραφή (''graphê''), meaning "drawing, writing," together meaning "drawing with light." History The first permanent photograph, a contact-exposed copy of an engraving, was made in 1822 using the bitumen-based "heliography" process developed by Nicéphore Niépce. The first photographs of a real-world scene, made using a camera obscura, followed a few years later at Le Gras, Fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abraham Stern (inventor)
Abraham Jacob Stern (; 1762 or 1769 – 3 February 1842) was a Polish Jewish ''maskil'', inventor, educator, and poet. He is known for his mechanical calculators. Biography Abraham Stern was born in Hrubieszow to poor Jewish parents Miriam Liba () and Menachem Mendel Stern (). He received a traditional Jewish education, and trained as a watchmaker. His natural aptitude in the study of philosophy, languages, and mathematics was discovered by reformer Stanisław Staszic, who invited him to Warsaw to continue his studies. His first major invention was a mechanical calculator, perfected in 1817, which could calculate the square roots of numbers. This attracted wide attention, and led to his being elected in 1817 the first Jewish member of the Warsaw Society of the Friends of Science. In 1816, and again in 1818, he was presented to Tsar Alexander I, who granted him an annual pension of 350 rubles from the state treasury, promising, in case of his death, to pay half of this sum to h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton's Laws Of Motion
Newton's laws of motion are three basic laws of classical mechanics that describe the relationship between the motion of an object and the forces acting on it. These laws can be paraphrased as follows: # A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force. # When a body is acted upon by a force, the time rate of change of its momentum equals the force. # If two bodies exert forces on each other, these forces have the same magnitude but opposite directions. The three laws of motion were first stated by Isaac Newton in his '' Philosophiæ Naturalis Principia Mathematica'' (''Mathematical Principles of Natural Philosophy''), originally published in 1687. Newton used them to investigate and explain the motion of many physical objects and systems, which laid the foundation for classical mechanics. In the time since Newton, the conceptual content of classical physics has been reformulated in alternative ways, involving diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laws Of Kepler
In astronomy, Kepler's laws of planetary motion, published by Johannes Kepler between 1609 and 1619, describe the orbits of planets around the Sun. The laws modified the heliocentric theory of Nicolaus Copernicus, replacing its circular orbits and epicycles with elliptical trajectories, and explaining how planetary velocities vary. The three laws state that: # The orbit of a planet is an ellipse with the Sun at one of the two foci. # A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. # The square of a planet's orbital period is proportional to the cube of the length of the semi-major axis of its orbit. The elliptical orbits of planets were indicated by calculations of the orbit of Mars. From this, Kepler inferred that other bodies in the Solar System, including those farther away from the Sun, also have elliptical orbits. The second law helps to establish that when a planet is closer to the Sun, it travels faster. The third ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halley's Comet
Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–79 years. Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and thus the only naked-eye comet that can appear twice in a human lifetime. Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061. Halley's periodic returns to the inner Solar System have been observed and recorded by astronomers around the world since at least 240 BC. But it was not until 1705 that the English astronomer Edmond Halley understood that these appearances were reappearances of the same comet. As a result of this discovery, the comet is named after Halley. During its 1986 visit to the inner Solar System, Halley's Comet became the first comet to be observed in detail by spacecraft, providing the first observational data on the structure of a comet nucleus and the mechanism of coma and tail f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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