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Jean-Philippe De Cheseaux
Jean-Philippe Loys de Cheseaux (; 4 May 1718 – 30 November 1751) was a Swiss astronomer. Biography Loys de Cheseaux was born on 4 May 1718 in Lausanne, Vaud, to Paul-Etienne Loys de Cheseaux, a banneret, and Estienne-Judith de Crousaz. His brother was Charles-Louis Loys de Cheseaux. He was educated by his maternal grandfather, the mathematician and philosopher Jean-Pierre de Crousaz, and wrote his first essays, under the title ''Essais de Physique'', in 1735, aged 17. In 1736, Loys de Cheseaux installed an observatory in his father's lands in Cheseaux-sur-Lausanne. He acquired a reputation in Europe as an astronomer with the publication of his ''Traité de la Comète'', in 1744, a treatise on his observations of the comet C/1743 X1 in which he also became one of the first to state, in its modern form, what would later be known as Olbers' paradox (that, if the universe is infinite, the night sky should be bright). After his discovery of C/1743 (along with Dirk Klinken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lausanne
Lausanne ( , ; ; ) is the capital and largest List of towns in Switzerland, city of the Swiss French-speaking Cantons of Switzerland, canton of Vaud, in Switzerland. It is a hilly city situated on the shores of Lake Geneva, about halfway between the Jura Mountains and the Alps, and facing the French town of Évian-les-Bains across the lake. Lausanne is located (as the crow flies) northeast of Geneva, the nearest major city. The Federal Supreme Court of Switzerland convenes in Lausanne, although it is not the ''de jure'' capital of the nation. The municipality of Lausanne has a population of about 140,000, making it the List of cities in Switzerland, fourth largest city in Switzerland after Basel, Geneva, and Zurich, with the entire agglomeration area having about 420,000 inhabitants (as of January 2019). The metropolitan area of Lausanne-Geneva (including Vevey-Montreux, Yverdon-les-Bains, Valais and foreign parts), commonly designated as ''Lake Geneva region, Arc lémanique ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dirk Klinkenberg
Dirk Klinkenberg (15 November 1709, Haarlem – 3 March 1799, The Hague) was secretary of the Dutch government for 40 years. He was also known as a mathematician and amateur astronomer. Jan de Munck, Dirk Klinkenberg, and Jean-Philippe de Cheseaux each independently discovered the Great Comet of 1744 (aka C/1743 X1). Klinkenberg would later also discover comets C/1748 K1 and C/1762 K1. Anticipating the return of Halley's Comet, he made an independent calculation of its orbit and sent Paris astronomers an estimate that it might reappear by May 1758. It was not observed until late December 1758. He was able to confirm its return independently on 24 April 1759.Joseph N de l'Isle,Sur la comète de 1759, ou le retour de celle de 1682" ''Mémoires de mathématique et de physique MDCCLX'' (Paris, 1766) pp. 380-465 Asteroid 10427 Klinkenberg, named after him, was discovered on September 24, 1960 by husband and wife team Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equinoxes
A solar equinox is a moment in time when the Sun appears directly above the equator, rather than to its north or south. On the day of the equinox, the Sun appears to rise directly east and set directly west. This occurs twice each year, around 20 March and 23 September. An equinox is equivalently defined as the time when the plane of Earth's equator passes through the geometric center of the Sun's disk. This is also the moment when Earth's rotation axis is directly perpendicular to the Sun-Earth line, tilting neither toward nor away from the Sun. In modern times, since the Moon (and to a lesser extent the planets) causes Earth's orbit to vary slightly from a perfect ellipse, the equinox is officially defined by the Sun's more regular ecliptic longitude rather than by its declination. The instants of the equinoxes are currently defined to be when the apparent geocentric longitude of the Sun is 0° and 180°. The word is derived from the Latin ', from ' (equal) and ' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solstices
A solstice is the time when the Sun reaches its most northerly or southerly excursion relative to the celestial equator on the celestial sphere. Two solstices occur annually, around 20–22 June and 20–22 December. In many countries, the seasons of the year are defined by reference to the solstices and the equinoxes. The term ''solstice'' can also be used in a broader sense, as the day when this occurs. For locations not too close to the equator or the poles, the dates with the longest and shortest periods of daylight are the summer and winter solstices, respectively. Terms with no ambiguity as to which hemisphere is the context are " June solstice" and " December solstice", referring to the months in which they take place every year. Etymology The word ''solstice'' is derived from the Latin () and (), because at the solstices, the Sun's declination appears to "stand still"; that is, the seasonal movement of the Sun's daily path (as seen from Earth) pauses at a northe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Book Of Daniel
The Book of Daniel is a 2nd-century BC biblical apocalypse with a 6th-century BC setting. It is ostensibly a narrative detailing the experiences and Prophecy, prophetic visions of Daniel, a Jewish Babylonian captivity, exile in Babylon. The text features prophecy rooted in Jewish history as well as a eschatology, portrayal of the end times that is cosmic in scope and political in its focus. The message of the text intended for the original audience was that just as the Yahweh, God of Israel saves Daniel from his enemies, so too he would save the Israelites in their present oppression. The Hebrew Bible includes Daniel as one of the Ketuvim, while Christian biblical canons group the work with the major prophets. It divides into two parts: a set of six court tales in chapters 1–6, written mostly in Biblical Aramaic, and four apocalyptic visions in chapters 7–12, written mainly in Late Biblical Hebrew; the Septuagint, the earliest extant Greek translation of the Hebrew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biblical Chronology
The chronology of the Bible is an elaborate system of lifespans, "generations", and other means by which the Masoretic Hebrew Bible (the text of the Bible most commonly in use today) measures the passage of events from the creation to around 164 BCE (the year of the re-dedication of the Second Temple). It was theological in intent, not historical in the modern sense, and functions as an implied prophecy whose key lies in the identification of the final event. The passage of time is measured initially by adding the ages of the Patriarchs at the birth of their firstborn sons, later through express statements, and later still by the synchronised reigns of the kings of Israel and Judah. The chronology is highly schematic, marking out a world cycle of 4,000 years. The Exodus takes place in the year A.M. 2666 (, years since the creation of the world), exactly two-thirds of the way through the 4,000-year period: the construction of Solomon's Temple commences 480 years afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Society
The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, recognising excellence in science, supporting outstanding science, providing scientific advice for policy, education and public engagement and fostering international and global co-operation. Founded on 28 November 1660, it was granted a royal charter by Charles II of England, King Charles II and is the oldest continuously existing scientific academy in the world. The society is governed by its Council, which is chaired by the society's president, according to a set of statutes and standing orders. The members of Council and the president are elected from and by its Fellows, the basic members of the society, who are themselves elected by existing Fellows. , there are about 1,700 fellows, allowed to use the postnominal title FRS (Fellow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Swedish Academy Of Sciences
The Royal Swedish Academy of Sciences () is one of the Swedish Royal Academies, royal academies of Sweden. Founded on 2 June 1739, it is an independent, non-governmental scientific organization that takes special responsibility for promoting natural sciences and mathematics and strengthening their influence in society, whilst endeavouring to promote the exchange of ideas between various disciplines. The goals of the academy are: * To be a forum where researchers meet across subject boundaries, * To offer a unique environment for research, * To provide support to younger researchers, * To reward outstanding research efforts, * To communicate internationally among scientists, * To advance the case for science within society and to influence research policy priorities * To stimulate interest in mathematics and science in school, and * To disseminate and popularize scientific information in various forms. Every year, the academy awards the Nobel Prizes in Nobel Prize in Physics, phy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Göttingen Academy Of Sciences And Humanities
The Göttingen Academy of Sciences (name since 2023 : )Note that the German ''Wissenschaft'' has a wider meaning than the English "Science", and includes Social sciences and Humanities. is the oldest continuously existing institution among the eight scientific academies in Germany, which are united under the umbrella of the Union of German Academies of Sciences and Humanities. It has the task of promoting research under its own auspices and in collaboration with academics in and outside Germany. It has its seat in the university town of Göttingen. Its meeting room is located in the auditorium of the University of Göttingen. History The ''Königliche Gesellschaft der Wissenschaften'' (''Royal Society of Sciences'') was founded in 1751 by King George II of Great Britain, who was also Prince-Elector of the Holy Roman Empire and Duke of Brunswick-Lüneburg (House of Hanover), the German state in which Göttingen was located. The first president was the Swiss natural historian and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corresponding Member
The corresponding member is one of the possible membership types in some organizations, especially in the learned societies and scientific academies. This title existed or exist in the Soviet Union, GDR, Polish People's Republic, Czechoslovak Socialist Republic , France, Ukraine, Belarus, Poland, Russia. Original category of membership Historically, this kind of membership was usual for the individuals living far from the academy or outside the country where the central academy offices are located. Because such people were unable to attend meetings, for organizational reasons they had to communicate their scientific contributions by " correspondence". This is why the status name includes the word “corresponding”. The problem of accessibility is important also now and accounted for by some institutions in the world. So, for example, the Australian Academy of Science entitles the prominent foreign researchers only to corresponding membership; among the people with this stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guillaume Bigourdan
Camille Guillaume Bigourdan (; 6 April 1851 – 28 February 1932) was a French astronomer. Personal life Bigourdan was born at Sistels, Tarn-et-Garonne to Pierre Bigourdan and Jeanne Carrière. When his teachers and local curate recognised his intelligence, he was transferred to a local boarding school in Valence d’Agen, where he excelled. In 1870, he received his Baccalauréat with mention of "Assez Bien". He married Marie Mélanie Sophie Mouchez, the eldest daughter of Admiral Amédée Mouchez. Together, the two had nine children. The entire family, including the Mouchez cousins, would frequently vacation in Sistels until the outbreak of the First World War, after which Bigourdan would vacation alone. During these vacations, he would farm his land and visit former classmates. He was fluent in Occitan, and spoke it when in Sistels. Academic and scientific career Bigourdan studied at the University of Toulouse from 1870, where he received a physics degree in 1874 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Le Gentil
Guillaume Joseph Hyacinthe Jean-Baptiste Le Gentil de la Galaisière (, 11 or 12 September 1725 – 22 October 1792) was a French astronomer who discovered several nebulae and was appointed to the Royal Academy of Sciences. He wrote on the estimation of the distance from the Earth to the Sun using solar transits, made unsuccessful attempts to observe the 1761 and 1769 transits of Venus from India during an 11-year journey from France, and wrote a popular account of his adventures and misadventures during the journey. Biography Guillaume Le Gentil was born on 11 or 12 September 1725 in Coutances and first intended to enter the church before turning to astronomy when inspired by a lecture by Joseph-Nicolas Delisle. By 1753 he was a professional astronomer and he wrote influentially on the subject of estimating the distance from the Earth to the Sun, the astronomical unit (AU), using transits of Mercury. He argued, contra Edmond Halley, that these transits could not be used f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
