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Einsteinturm 7443a
The Einstein Tower (German: ''Einsteinturm'') is an astrophysical observatory in the Albert Einstein Science Park in Potsdam, Germany built by architect Erich Mendelsohn. It was built on the summit of the Potsdam ''Prussian semaphore system#Route, Telegraphenberg'' to house a solar telescope designed by the astronomer Erwin Finlay-Freundlich. The telescope supports experiments and observations to validate (or disprove) Albert Einstein's relativity theory. The building was first conceived around 1917, built from 1919 to 1921 after a fund-raising drive, and became operational in 1924. Although Einstein never worked there, he supported the construction and operation of the telescope. It is still a working solar observatory today as part of the Astrophysical Institute Potsdam, Leibniz Institute for Astrophysics Potsdam. Light from the telescope is directed down through the shaft to the basement where the instruments and laboratory are located. There were more than half a dozen telescop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Observatory
An observatory is a location used for observing terrestrial, marine, or celestial events. Astronomy, climatology/meteorology, geophysical, oceanography and volcanology are examples of disciplines for which observatories have been constructed. Historically, observatories were as simple as containing an astronomical sextant (for measuring the distance between stars) or Stonehenge (which has some alignments on astronomical phenomena). Astronomical observatories Astronomical observatories are mainly divided into four categories: space-based, airborne, ground-based, and underground-based. Ground-based observatories Ground-based observatories, located on the surface of Earth, are used to make observations in the radio and visible light portions of the electromagnetic spectrum. Most optical telescopes are housed within a dome or similar structure, to protect the delicate instruments from the elements. Telescope domes have a slit or other opening in the roof that can be opened during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Wilson Observatory
The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States. The MWO is located on Mount Wilson, a peak in the San Gabriel Mountains near Pasadena, northeast of Los Angeles. The observatory contains two historically important telescopes: the Hooker telescope, which was the largest aperture telescope in the world from its completion in 1917 to 1949, and the 60-inch telescope which was the largest operational telescope in the world when it was completed in 1908. It also contains the Snow solar telescope completed in 1905, the 60 foot (18 m) solar tower completed in 1908, the 150 foot (46 m) solar tower completed in 1912, and the CHARA array, built by Georgia State University, which became fully operational in 2004 and was the largest optical interferometer in the world at its completion. Due to the inversion layer that traps warm air and smog over Los Angeles, Mount Wilson has steadier air than any other location in Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Astronomical Union
The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation. It was founded in 1919 and is based in Paris, France. The IAU is composed of individual members, who include both professional astronomers and junior scientists, and national members, such as professional associations, national societies, or academic institutions. Individual members are organised into divisions, committees, and working groups centered on particular subdisciplines, subjects, or initiatives. As of 2018, the Union had over 13,700 individual members, spanning 90 countries, and 82 national members. Among the key activities of the IAU is serving as a forum for scientific conferences. It sponsors nine annual symposia and holds a triannual General Assembly that sets policy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ICOMOS
The International Council on Monuments and Sites (ICOMOS; french: links=no, Conseil international des monuments et des sites) is a professional association that works for the conservation and protection of cultural heritage places around the world. Now headquartered in Charenton-le-Pont, France, ICOMOS was founded in 1965 in Warsaw as a result of the Venice Charter of 1964, and offers advice to UNESCO on World Heritage Sites. The idea behind ICOMOS dates to the Athens Conference on the restoration of historic buildings in 1931, organized by the International Museums Office. The Athens Charter of 1931 introduced the concept of international heritage. In 1964, the Second Congress of Architects and Specialists of Historic Buildings, meeting in Venice, adopted 13 resolutions. The first created the International Charter on the Conservation and Restoration of Monuments and Sites, better known as Venice Charter; the second, put forward by UNESCO, created ICOMOS to carry out this charter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klaus Hentschel
Klaus Hentschel (born 4 April 1961) is a German physicist, historian of science and Professor and head of the History of Science and Technology section in the History Department of the University of Stuttgart. He is known for his contributions in the field of the history of science. Life and work Born in Bad Nauheim, Hentschel from 1979 to 1985 studied physics, philosophy, science, history and musicology at the University of Hamburg. He completed his studies in philosophy in 1985 with the master's examination, and a study in physics in 1987. After some studies in the United States, among others in Boston on a DAAD, he in 1989 received his PhD at the University of Hamburg. His thesis was entitled "Interpretationen und Fehlinterpretationen der speziellen und der allgemeinen Relativitätstheorie durch Zeitgenossen Albert Einsteins" (Interpretations and misinterpretations of the special and general relativity theory by Albert Einstein's contemporaries). After graduation Hentschel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Solar Telescopes
This is a list of solar telescopes built in various countries around the world. A solar telescope is a specialized telescope that is used to observe the Sun. This list contains ground-based professional observatory telescopes at optical wavelengths in chronological order. Solar telescopes often have multiple focal lengths, and use a various combination of mirrors such as coelostats, lenses, and tubes for instruments including spectrographs, cameras, or coronagraphs. There are many types of instruments that have been designed to observe Earth's Sun, for example, in the 20th century solar towers were common. Ground telescopes Optical telescopes Telescopes for the Sun have existed for hundreds of years, this list is not complete and only goes back to 1900. Potential future optical telescopes Radio telescopes Other types of solar telescopes There are much smaller commercial and/or amateur telescopes such as ''Coronado Filters'' from founder and designer David Lunt, bought by Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Pöppel
Ernst Pöppel (born 29 April 1940) is a German psychologist and neuroscientist. He is the father of Dr. David Poeppel. Education and research Pöppel was born in Schwessin, Farther Pomerania. He studied psychology and biology in Freiburg and Munich, before finishing his academic education with PhD in 1968 in Innsbruck, Austria. He did research on temporal perception and circadian rhythms between 1964 and 1968, in the Max-Planck-Institute of Behavioral Physiology, and on neurophysiology of vision in 1969 and 1970 in Max-Planck-Institute of Psychiatry, Munich. From 1971 to 1973, he did research on neuropsychology of vision at the Department of Psychology and Brain Science at MIT, Cambridge, USA. At the same time, he was staff scientist at the Neuroscience Research Program (NRP). At this time, he described together with Richard Held and Douglas Frost a phenomenon of residual vision, which became known as blindsight. After his first habilitation in Sensory Physiology (Dr. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charité
The Charité – Universitätsmedizin Berlin (Charité – Berlin University of Medicine) is one of Europe's largest university hospitals, affiliated with Humboldt University and Free University Berlin. With numerous Collaborative Research Centres of the German Research Foundation it is one of Germany's most research-intensive medical institutions. From 2012 to 2022, it was ranked by ''Focus'' as the best of over 1000 hospitals in Germany. In 2019 to 2022 ''Newsweek'' ranked the Charité as the 5th best hospital in the world, and the best in Europe. More than half of all German Nobel Prize winners in Physiology or Medicine, including Emil von Behring, Robert Koch and Paul Ehrlich, have worked at the Charité. Several politicians and diplomats have been treated at the Charité, including German Chancellor Angela Merkel, who underwent meniscus treatment at the Orthopaedic Department, Yulia Tymoshenko from Ukraine, and more recently Russian opposition leader Alexei Navalny, who re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volker März
Volker may refer to: * Volker (name), including a list of people with the given name or surname * Volker, Kansas City, a historic neighborhood in Kansas City * Volker Boulevard, Kansas City * '' Alien Nations'' (German: ''Die Völker''), a real-time strategy video game released in 1999 See also * VolkerWessels, a Dutch construction company ** VolkerRail, a railway infrastructure services company based in Doncaster, England, owned by VolkerWessels * Voelcker (other) Voelcker(s)/Völcker(s) (or Volcker) is a surname, and may refer to: *Augustus Voelcker (1822–1884), German-born English agricultural chemist *Francis William Voelcker (1896–1954), British army officer * John Augustus Voelcker (1854–1937), Eng ... * Voelker (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenerife
Tenerife (; ; formerly spelled ''Teneriffe'') is the largest and most populous island of the Canary Islands. It is home to 43% of the total population of the archipelago. With a land area of and a population of 978,100 inhabitants as of January 2022, it is also the most populous island of Spain and of Macaronesia. Approximately five million tourists visit Tenerife each year; it is the most visited island in the archipelago. It is one of the most important tourist destinations in Spain and the world, hosting one of the world's largest carnivals, the Carnival of Santa Cruz de Tenerife. The capital of the island, , is also the seat of the island council (). That city and are the co-capitals of the autonomous community of the Canary Islands. The two cities are both home to governmental institutions, such as the offices of the presidency and the ministries. This has been the arrangement since 1927, when the Crown ordered it. (After the 1833 territorial division of Spain, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photosphere
The photosphere is a star's outer shell from which light is radiated. The term itself is derived from Ancient Greek roots, φῶς, φωτός/''phos, photos'' meaning "light" and σφαῖρα/''sphaira'' meaning "sphere", in reference to it being a spherical surface that is perceived to emit light. It extends into a star's surface until the plasma becomes opaque, equivalent to an optical depth of approximately , or equivalently, a depth from which 50% of light will escape without being scattered. A photosphere is the deepest region of a luminous object, usually a star, that is transparent to photons of certain wavelengths. Temperature The surface of a star is defined to have a temperature given by the effective temperature in the Stefan–Boltzmann law. Stars, except neutron stars, have no solid or liquid surface. Therefore, the photosphere is typically used to describe the Sun's or another star's visual surface. Composition of the Sun The Sun is composed primarily of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Physics
Solar physics is the branch of astrophysics that specializes in the study of the Sun. It deals with detailed measurements that are possible only for our closest star. It intersects with many disciplines of pure physics, astrophysics, and computer science, including fluid dynamics, plasma physics including magnetohydrodynamics, seismology, particle physics, atomic physics, nuclear physics, stellar evolution, space physics, spectroscopy, radiative transfer, applied optics, signal processing, computer vision, computational physics, stellar physics and solar astronomy. Because the Sun is uniquely situated for close-range observing (other stars cannot be resolved with anything like the spatial or temporal resolution that the Sun can), there is a split between the related discipline of observational astrophysics (of distant stars) and observational solar physics. The study of solar physics is also important as it provides a "physical laboratory" for the study of plasma physi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
