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Harvard Collection Of Historical Scientific Instruments
Harvard University's Collection of Historical Scientific Instruments (CHSI), established 1948, is "one of the three largest university collections of its kind in the world". Waywiser, the online catalog of the collection, lists over 60% of the collection's 20,000 objects . The collection was originally curated by Mr. David P Wheatland in his office to prevent obsolete equipment from being cannibalized for its component parts and materials. Physical facilities A selection of instruments and artifacts from the collection comprise the exhibition ''Time, Life, & Matter: Science in Cambridge''. This permanent display can be found in the Putnam Gallery on the first floor of the Harvard Science Center, which is free and open to the public during regularly scheduled hours, Sunday through Friday. In addition, rotating collaborative exhibitions drawn in part from the collection are shown in the Special Exhibitions Gallery on the second floor, as well as the more modest Foyer Gallery on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Alliance Of Museums
The American Alliance of Museums (AAM), formerly the American Association of Museums, is a non-profit association whose goal is to bring museums together. Founded in 1906, the organization advocates for museums and provides "museum professionals with the resources, knowledge, inspiration, and connections they need to move the field forward." AAM represents the scope of museums, professionals, and nonpaid staff who work for and with museums. AAM represents more than 25,000 individual museum professionals and volunteers, 4,000 institutions, and 150 corporate members. Individual members include directors, curators, registrars, educators, exhibit designers, public relations officers, development officers, security managers, trustees, and Volunteering, volunteers. Museums represented by the members include art museum, art, history, science museum, science, military, maritime, and children's museum, youth museums, as well as public aquariums, zoos, botanical gardens, arboretums, histori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galileo Galilei
Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei ( , , ) or mononymously as Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a polymath. He was born in the city of Pisa, then part of the Duchy of Florence. Galileo has been called the father of observational astronomy, modern-era classical physics, the scientific method, and modern science. Galileo studied speed and velocity, gravity and free fall, the principle of relativity, inertia, projectile motion and also worked in applied science and technology, describing the properties of the pendulum and "hydrostatic balances". He was one of the earliest Renaissance developers of the thermoscope and the inventor of various sector (instrument), military compasses. With an improved telescope he built, he observed the stars of the Milky Way, the phases of Venus, the Galilean moons, four largest satellites of Jupiter, Saturn's r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Museums In Massachusetts
History is the systematic study of the past, focusing primarily on the human past. As an academic discipline, it analyses and interprets evidence to construct narratives about what happened and explain why it happened. Some theorists categorize history as a social science, while others see it as part of the humanities or consider it a hybrid discipline. Similar debates surround the purpose of history—for example, whether its main aim is theoretical, to uncover the truth, or practical, to learn lessons from the past. In a more general sense, the term ''history'' refers not to an academic field but to the past itself, times in the past, or to individual texts about the past. Historical research relies on primary and secondary sources to reconstruct past events and validate interpretations. Source criticism is used to evaluate these sources, assessing their authenticity, content, and reliability. Historians strive to integrate the perspectives of several sources to devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Instruments
A scientific instrument is a device or tool used for scientific purposes, including the study of both natural phenomena and theoretical research. History Historically, the definition of a scientific instrument has varied, based on usage, laws, and historical time period. Before the mid-nineteenth century such tools were referred to as "natural philosophical" or "philosophical" apparatus and instruments, and older tools from antiquity to the Middle Ages (such as the astrolabe and pendulum clock) defy a more modern definition of "a tool developed to investigate nature qualitatively or quantitatively." Scientific instruments were made by instrument makers living near a center of learning or research, such as a university or research laboratory. Instrument makers designed, constructed, and refined instruments for purposes, but if demand was sufficient, an instrument would go into production as a commercial product. In a description of the use of the eudiometer by Jan Ingenhousz to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard University Museums
Harvard University is a private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States. Its influence, wealth, and rankings have made it one of the most prestigious universities in the world. Harvard was founded and authorized by the Massachusetts General Court, the governing legislature of colonial-era Massachusetts Bay Colony. While never formally affiliated with any denomination, Harvard trained Congregational clergy until its curriculum and student body were gradually secularized in the 18th century. By the 19th century, Harvard emerged as the most prominent academic and cultural institution among the Boston elite. Following the American Civil War, under Harvard president Charles William Eliot's long tenure from 1869 to 1909, Harvard developed multiple professional schools, which transformed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard Library
Harvard Library is the network of libraries and services at Harvard University, a private Ivy League university in Cambridge, Massachusetts. Harvard Library is the oldest library system in the United States and both the largest academic library and largest private library in the world. Its collection holds over 20 million volumes, 400 million manuscripts, 10 million photographs, and one million maps. Harvard Library holds the third-largest collection of all libraries in the world, after the Library of Congress and Boston Public Library, by number of volumes held. Among libraries, measured on the number of all items held, it is the fifth-largest library in the nation. Harvard Library is a member of the Research Collections and Preservation Consortium (ReCAP); other members include Columbia University Libraries, Princeton University Library, New York Public Library, and Ivy Plus Libraries Confederation, making over 90 million books available to the library's users. The libr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sara J
Sara may refer to: People * Sara (given name), a feminine given name People with the given name * Sara Aboobacker (1936–2023), Indian writer and translator * Sara Ahmed (born 1969), British-Australian writer * Sara Allgood (1880–1950), Irish-American actress * Sara Bareilles (born 1979), American musician * Sara Sun Beale (born 1949), American law professor * Sara Cox (born 1974), British broadcaster and author * Sara Davies (born 1984), British businesswoman, entrepreneur, and television personality * Sara Duterte (born 1978), 15th Vice-President of the Philippines * Sara Gadimova (1922–2005), Azerbaijani singer * Sara Ali Khan (born 1995), Indian actress * Sara Gilbert (born, 1975), American actress * Sara-Nicole Morales (1986–2021), American woman who was shot dead * Sara Elisabeth Moræa (1716–1806), Swedish founder of the Linnean Society of London * Sara Nuru (born 1989), German fashion model * Sara Agnes Rice Pryor (1830–1912), American novelist * Sara Qa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard John A
Harvard University is a private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States. Its influence, wealth, and rankings have made it one of the most prestigious universities in the world. Harvard was founded and authorized by the Massachusetts General Court, the governing legislature of colonial-era Massachusetts Bay Colony. While never formally affiliated with any denomination, Harvard trained Congregational clergy until its curriculum and student body were gradually secularized in the 18th century. By the 19th century, Harvard emerged as the most prominent academic and cultural institution among the Boston elite. Following the American Civil War, under Harvard president Charles William Eliot's long tenure from 1869 to 1909, Harvard developed multiple professional schools, which transformed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromechanical Computer
A mechanical computer is a computer built from mechanical components such as levers and gears rather than electronic components. The most common examples are adding machines and mechanical counters, which use the turning of gears to increment output displays. More complex examples could carry out multiplication and division—Friden used a moving head which paused at each column—and even differential analysis. One model, the Ascota 170 accounting machine sold in the 1960s, calculated square roots. Mechanical computers reached their zenith during World War II, when they formed the basis of complex bombsights including the Norden, as well as the similar devices for ship computations such as the US Torpedo Data Computer or British Admiralty Fire Control Table. Noteworthy are mechanical flight instruments for early spacecraft, which provided their computed output not in the form of digits, but through the displacements of indicator surfaces. From Yuri Gagarin's first sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard Mark I
The Harvard Mark I, or IBM Automatic Sequence Controlled Calculator (ASCC), was one of the earliest general-purpose electromechanical computers used in the war effort during the last part of World War II. One of the first programs to run on the Mark I was initiated on 29 March 1944 by John von Neumann. At that time, von Neumann was working on the Manhattan Project, and needed to determine whether implosion was a viable choice to detonate the atomic bomb that would be used a year later. The Mark I also computed and printed mathematical tables, which had been the initial goal of British inventor Charles Babbage for his analytical engine in 1837. According to Edmund Berkeley, the operators of the Mark I often called the machine "Bessy, the Bessel engine", after Bessel functions. The Mark I was disassembled in 1959; part of it was given to IBM, part went to the Smithsonian Institution, and part entered the Harvard Collection of Historical Scientific Instruments. For decades, H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard Cyclotron Laboratory
The Harvard Cyclotron Laboratory operated from 1949 to 2002. It was most notable for its contributions to the development of proton therapy. The Harvard Cyclotron Laboratory was built with office of Naval Research funds between 1946 and 1949 to replace an earlier, lower energy, cyclotron that was sent to Los Alamos for use in the Manhattan Project. Richard Wilson, "A Brief History of the Harvard University Cyclotrons", Harvard University Press, 2004 Until 1961, the laboratory primarily performed experiments in physics. The lab performed research and development in particle physics (including ''particle detectors'' development and testing), activation analysis, radiobiology, and solid state physics. The use of proton particle accelerators for external beam radiotherapy was largely developed at this facility in collaboration with Massachusetts General Hospital Massachusetts General Hospital (Mass General or MGH) is a teaching hospital located in the West End neighborhood ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundials
A sundial is a horology, horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the position of the Sun, apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the ''dial'') and a gnomon, which casts a shadow onto the dial. As the Sun diurnal motion, appears to move through the sky, the shadow aligns with different hour-lines, which are marked on the dial to indicate the time of day. The ''style'' is the time-telling edge of the gnomon, though a single point or ''nodus'' may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting. The style must be polar alignment, parallel to the axis of the Earth's rotation for the sundial to be accurate throughout the year. The style's angle from horizontal is equal to the sundial's geographical latitude. The term ''sundial'' can r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
