Simon Plössl (September 19, 1794, Vienna – January 29, 1868, Vienna) was an Austrian optical instrument maker. Initially trained at the Voigtländer company, he set up his own workshop in 1823. His major achievement at the time was the improvement of the achromatic microscope objective. Today he is best known for the eponymous Plössl telescope eyepiece, which follows his 1860 design and has been used extensively by amateur astronomers since the 1980s.
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A microscope is an instrument used to see objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using such an instrument. Microscopic means invisible to the eye unless aided by a microscope.
Carl Zeiss was a German scientific instrument maker, optician and businessman who founded the workshop of Carl Zeiss in 1846, which is still in business today as Carl Zeiss AG. Zeiss gathered a group of gifted practical and theoretical opticians and glass makers to reshape most aspects of optical instrument production. His collaboration with Ernst Abbe revolutionized optical theory and practical design of microscopes. Their quest to extend these advances brought Otto Schott into the enterprises to revolutionize optical glass manufacture. The firm of Carl Zeiss grew to one of the largest and most respected optical firms in the world.
An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes. It is so named because it is usually the lens that is closest to the eye when someone looks through the device. The objective lens or mirror collects light and brings it to focus creating an image. The eyepiece is placed near the focal point of the objective to magnify this image. The amount of magnification depends on the focal length of the eyepiece.
A micrograph or photomicrograph is a photograph or digital image taken through a microscope or similar device to show a magnified image of an object. This is opposed to a macrograph or photomacrograph, an image which is also taken on a microscope but is only slightly magnified, usually less than 10 times. Micrography is the practice or art of using microscopes to make photographs.
Calvin Forrest Quate was one of the inventors of the atomic force microscope. He was a professor emeritus of Applied Physics and Electrical Engineering at Stanford University.
Nicolaas Hartsoeker was a Dutch mathematician and physicist who invented the screw-barrel simple microscope circa 1694.
Cornelius Varley, FRSA was an English water-colour painter and optical instrument-maker. He invented the graphic telescope and the graphic microscope.
Miklós Ybl was one of Europe's leading architects in the mid to late nineteenth century as well as Hungary's most influential architect during his career. His most well-known work is the Hungarian State Opera House in Budapest (1875–84).
Otto Edelmann was an Austrian bass. He was born in Vienna and studied singing in Vienna with Gunnar Graarud. His debut was at Gera as Figaro in Mozart's The Marriage of Figaro. He later sang the Vienna State Opera, the Edinburgh Festival and the Metropolitan Opera. He sang at the Bayreuth Festival immediately after its reopening in 1951 after World War II, performing the role of Hans Sachs in Wagner's Die Meistersinger von Nürnberg. He also sang Ochs in Richard Strauss's Der Rosenkavalier at the first performances in the new Salzburg Festspielhaus in 1960. In 1957, he recorded the role of Wotan opposite Kirsten Flagstad in Georg Solti's recording of Act III of Wagner's Die Walküre. He died in Vienna.
Jonas Baes is a Philippine composer born in Los Baños, Laguna in 1961. He enrolled in the University of the Philippines' College of Music in 1977 as a student of Ramon P. Santos, and encountered the musical compositions of Jose Maceda, attended several seminar-workshops of visiting lecturers, and did research on the music of the Iraya-Mangyan people of Mindoro, which became the inspiration for his compositions. From 1992-1994, he studied with Mathias Spahlinger in Freiburg, Germany. Baes is known for writing music utilizing "unorthodox" musical instruments like bean-pod rattles, leaves, iron-nail chimes, as well as various Asian instruments such as bamboo scrapers, bamboo flutes, and vocal music using Asian vocal techniques. His early works in the 1980s were influenced by Maceda in the use of large numbers of performers, while in the 1990s he experimented with various methods by which the audience becomes integral in the performance. At the beginning of the new century, Baes experiments with notions of structure-agency integration [after Anthony Giddens] and simulacrum [after Jean Baudrillard]. It is typical for social theory to influence the work of Baes who has made a mark on contemporary music and cultural politics in the Asian region. Jonas Baes is also active as an ethnomusicologist and writer.
The history of model organisms began with the idea that certain organisms can be studied and used to gain knowledge of other organisms or as a control (ideal) for other organisms of the same species. Model organisms offer standards that serve as the authorized basis for comparison of other organisms. Model organisms are made standard by limiting genetic variance, creating, hopefully, this broad applicability to other organisms.
A qanbūs or gambus is a short-necked lute that originated in Yemen and spread throughout the Arabian peninsula. Sachs considered that it derived its name from the Turkic komuz, but it is more comparable to the oud. The instrument was related to or a descendant of the barbat. It has twelve nylon strings that are plucked with a plastic plectrum to generate sound, much like a guitar. However, unlike a guitar, the gambus has no frets. Its popularity declined during the early 20th century reign of Imam Yahya; by the beginning of the 21st century, the oud had replaced the qanbūs as the instrument of choice for Middle-Eastern lutenists.
A Scientific equipment optician is an individual who makes and adjusts other optical aids, including telescope optics and microscope lenses. See also Optician for individuals who make and adjust glasses.
Bruno Weil is a symphonic conductor. He is principal guest conductor of Tafelmusik, the period-instrument group based in Toronto, Music Director of the Carmel Bach Festival in California, and artistic director of the period-instrument festival "Klang und Raum" in Irsee, Bavaria. He has served as General Music Director of Augsburg (1981–1989), and of Duisburg (1989–2002). He currently serves as Professor of Conducting at the State Academy for Music and Theater in Munich.
Georgios Sinas was a Greek entrepreneur, banker, national benefactor of Greece and father of the Greek national benefactor of Austria, Simon Sinas. He was the founder of the Athens National Observatory.
The SZD-12 Mucha 100 was a single-seat glider aircraft that was designed and built in Poland from 1953.
Seiler Instrument & Mfg. Co. is a full service contract manufacturer specializing in optical fire control equipment as well as a major distributor of surveying software and instruments, microscopes, and Zeiss planetariums. There are several main divisions within the company which include Manufacturing, Geospatial-Survey, Microscope, Planetarium, and Night Vision. It is headquartered in St. Louis, Missouri with Geospatial-Survey sales offices located in Kansas City, Illinois, Nebraska, Indiana, and Wisconsin.
Brass instrument valves are valves used to change the length of tubing of a brass instrument allowing the player to reach the notes of various harmonic series. Each valve pressed diverts the air stream through additional tubing, individually or in conjunction with other valves. This lengthens the vibrating air column thus lowering the fundamental tone and associated harmonic series produced by the instrument. Valves in brass instruments require regular maintenance and lubrication to ensure fast and reliable movement.
George Smits, aka 'Toet', was a Belgian visual artist, comics artist, radio presenter, experimental musician and inventor of experimental musical instruments.
This page is mainly based on a translation of the German Wikipedia article, locatedhere.