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Aimé Laussedat
Aimé Laussedat (April 19, 1819 – March 19, 1907) was a French scientist, more specifically, an observational astronomer, geodesist, surveyor, photogrammetrist, and cartographer. Biography Laussedat was born in Moulins on April 19, 1819. He was an engineer, researcher and professor at the École polytechnique, then eminent manager at the National Conservatory of Arts and Crafts. He was a military engineer at the beginning of his career. He is considered the father of photogrammetry. He died on March 19, 1907 (at the age of 87), in Paris. Namesakes * Mount Laussedat * Laussedat Heights *The Colonel See also * Carlos Ibáñez e Ibáñez de Ibero – 1st president of the International Committee for Weights and Measures The General Conference on Weights and Measures (abbreviated CGPM from the ) is the supreme authority of the International Bureau of Weights and Measures (BIPM), the intergovernmental organization established in 1875 under the terms of the Metre C ... a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers typically fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate Con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laussedat Heights
The Arctowski Peninsula () is a peninsula, long in a north-south direction, lying between Andvord Bay and Wilhelmina Bay on the west coast of Graham Land, Antarctica. Location The Arctowski Peninsula is on the Danco Coast on the west of the Antarctic Peninsula. It extends in a north-northwest direction from the Forbidden Plateau to the south into the Gerlache Strait to the north. Wilhelmina Bay is to the east. Across the Gerlache Strait the end of the peninsula faces the Solvay Mountains on Brabant Island to the north, and the Osterrieth Range on Anvers Island to the northwest. Rongé Island is west of the northwest side of the peninsula. The Laussedat Heights on the southwest side of the peninsula look over Andvord Bay to the west. The peninsula extends southeast to a line defined by Arago Glacier, which flows south into Henryk Cove, and Woodbury Glacier, which flows north into Piccard Cove. Northern features include Cape Anna, Mount Fourcade, Orne Harbour, Spigot Peak, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1819 Births
Events January–March * January 2 – The Panic of 1819, the first major peacetime financial crisis A financial crisis is any of a broad variety of situations in which some financial assets suddenly lose a large part of their nominal value. In the 19th and early 20th centuries, many financial crises were associated with Bank run#Systemic banki ... in the United States, begins. * January 25 – Thomas Jefferson founds the University of Virginia. * January 29 – Sir Stamford Raffles lands on the island of Singapore. * February 2 – ''Dartmouth College v. Woodward'': The Supreme Court of the United States under John Marshall rules in favor of Dartmouth College, allowing Dartmouth to keep its charter and remain a private institution. * February 6 – The 1819 Singapore Treaty, Treaty of Singapore, is signed between Hussein Shah of Johor and Sir Stamford Raffles of Britain, to create a trading settlement in Singapore. * February 15 – The U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th-century French Astronomers
The 19th century began on 1 January 1801 (represented by the Roman numerals MDCCCI), and ended on 31 December 1900 (MCM). It was the 9th century of the 2nd millennium. It was characterized by vast social upheaval. Slavery was abolished in much of Europe and the Americas. The First Industrial Revolution, though it began in the late 18th century, expanded beyond its British homeland for the first time during the 19th century, particularly remaking the economies and societies of the Low Countries, France, the Rhineland, Northern Italy, and the Northeastern United States. A few decades later, the Second Industrial Revolution led to ever more massive urbanization and much higher levels of productivity, profit, and prosperity, a pattern that continued into the 20th century. The Catholic Church, in response to the growing influence and power of modernism, secularism and materialism, formed the First Vatican Council in the late 19th century to deal with such problems and confir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Association Of Geodesy
The International Association of Geodesy (IAG) is a constituent association of the International Union of Geodesy and Geophysics focusing on the science which measures and describes the Figure of the Earth, Earth's shape, its rotation and gravity field. History The precursors to the IAG were arc measurement campaigns. The IAG was founded in 1862 as the ''Mitteleuropäische Gradmessung'' (Central European Arc Measurement), later became the ''Europäische Gradmessung'' (European Arc Measurement) in 1867, the ''Internationale Erdmessung'' (''Association Geodésique Internationale'' in French and "International Geodetic Association" in English) in 1886, and took its present name in 1946. In the second half of the 19th century, the creation of the International Geodetic Association marked, following Friedrich Wilhelm Bessel and Friedrich Georg Wilhelm von Struve examples, the systematic adoption of more rigorous methods among them the application of the least squares in geodesy. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Conference On Weights And Measures
The General Conference on Weights and Measures (abbreviated CGPM from the ) is the supreme authority of the International Bureau of Weights and Measures (BIPM), the intergovernmental organization established in 1875 under the terms of the Metre Convention through which member states act together on matters related to measurement science and measurement standards. The CGPM is made up of delegates of the governments of the member states and observers from the Associates of the CGPM. It elects the International Committee for Weights and Measures (abbreviated CIPM from the ) as the supervisory board of the BIPM to direct and supervise it. Initially the work of the BIPM concerned the kilogram and the metre, but in 1921 the scope of the Metre Convention was extended to accommodate all Physical quantity, physical measurements and hence all aspects of the metric system. In 1960 the 11th CGPM approved the title International System of Units, usually known as "SI". The General Conferenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlos Ibáñez E Ibáñez De Ibero
Carlos Ibáñez e Ibáñez de Ibero, 1st Marquis of Mulhacén, (14 April 1825 – 28 or 29 January 1891) was a Spanish divisional general and geodesist. He represented Spain at the 1875 Conference of the Metre Convention and was the first president of the International Committee for Weights and Measures. As a forerunner geodesist and president of the International Geodetic Association, he played a leading role in the worldwide dissemination of the metric system. His activities resulted in the distribution of a platinum and iridium prototype of the metre to all States parties to the Metre Convention during the first meeting of the General Conference on Weights and Measures in 1889. These prototypes defined the metre right up until 1960. He was born in Barcelona. According to Spanish tradition, his surname was a combination of his father's first surname, Martín ''Ibáñez'' y de Prado and of his mother's first surname, Carmen ''Ibáñez de Ibero'' y González del Río. As his par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Laussedat
Mount Laussedat is a mountain summit located in the Canadian Rockies of British Columbia, Canada. It is the highest point in the Southwest Central Park Ranges. The mountain is situated north of Golden, British Columbia, Golden in the Blaeberry River, Blaeberry Valley. The first ascent of the mountain was made in 1906 by C. B. Sissons, Arthur Oliver Wheeler, and M. Wheeler. The peak was named in 1911 by surveyor Arthur Oliver Wheeler for Aimé Laussedat (1819-1907), a French military officer whose pioneering photographic surveying techniques were used by Wheeler and Canada's Interprovincial Boundary Surveyors. The mountain's name was officially adopted March 31, 1924, when approved by the Geographical Names Board of Canada. __NOTOC__ Climate Based on the Köppen climate classification, Mount Laussedat is located in a subarctic climate zone with cold, snowy winters, and mild summers. Temperatures can drop below −20 °C with wind chill factors below −30 °C. Precipitat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of cities in the European Union by population within city limits, fourth-most populous city in the European Union and the List of cities proper by population density, 30th most densely populated city in the world in 2022. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, culture, Fashion capital, fashion, and gastronomy. Because of its leading role in the French art, arts and Science and technology in France, sciences and its early adoption of extensive street lighting, Paris became known as the City of Light in the 19th century. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an official estimated population of 12,271,794 inhabitants in January 2023, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photogrammetry
Photogrammetry is the science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images and patterns of electromagnetic radiant imagery and other phenomena. While the invention of the method is attributed to Aimé Laussedat, the term "photogrammetry" was coined by the German architect , which appeared in his 1867 article "Die Photometrographie." There are many variants of photogrammetry. One example is the extraction of three-dimensional measurements from two-dimensional data (i.e. images); for example, the distance between two points that lie on a plane parallel to the photographic image plane can be determined by measuring their distance on the image, if the scale (map), scale of the image is known. Another is the extraction of accurate color ranges and values representing such quantities as albedo, specular reflection, Metallicity#Photometric colors, metallicity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
