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Wallace Clement Sabine
Wallace Clement Sabine (June 13, 1868 – January 10, 1919) was an American physicist who founded the field of architectural acoustics. Sabine was the architectural acoustician of Boston's Symphony Hall, widely considered one of the two or three best concert halls in the world for its acoustics. Early life Wallace Clement Sabine was born on June 13, 1868 in Richwood, Ohio. He graduated with a Bachelor of Arts from Ohio State University in 1886 at the age of 18. He then attended Harvard University and graduated with a Master of Arts in 1888. His sister was Annie W. S. Siebert. Career After graduating, Sabine became an assistant professor of physics at Harvard in 1889. He became an instructor in 1890 and a member of the faculty in 1892. In 1895, he became an assistant professor and in 1905, he was promoted to professor of physics. In October 1906, he became dean of the Lawrence Scientific School, succeeding Nathaniel Shaler. Sabine's career is the story of the birth of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richwood, Ohio
Richwood is a village in Union County, Ohio, United States. The population was 2,229 at the 2010 census. History Early history, 1820–1860 Union County was organized on January 10, 1820 from territory previously contained in Franklin, Madison, Logan and Delaware Counties.Vern Jackson, Ronald. "Ohio 1840 Census Index", Accelerated Indexing Systems, Inc., Bountiful, Utah, 1978. Print. Claibourne Township was surveyed by Richard Claiborne in 1811, and at that time the land was mostly level with some light rolling. He described the soil as 'argillacious' with a thick tree growth. The first settler in Claiborne Township was Cyprian Lee, who with Henry Swartz took the contract to build the township's first road in 1825. The wide road was cut from the southernmost to the northernmost lines of the township, the effort consisting of clearing underbrush and small trees, leaving 'many obstacles in the shape of large timber.' This north to south road passed through what would become ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newspapers
A newspaper is a periodical publication containing written information about current events and is often typed in black ink with a white or gray background. Newspapers can cover a wide variety of fields such as politics, business, sports and art, and often include materials such as opinion columns, weather forecasts, reviews of local services, obituaries, birth notices, crosswords, editorial cartoons, comic strips, and advice columns. Most newspapers are businesses, and they pay their expenses with a mixture of subscription revenue, newsstand sales, and advertising revenue. The journalism organizations that publish newspapers are themselves often metonymically called newspapers. Newspapers have traditionally been published in print (usually on cheap, low-grade paper called newsprint). However, today most newspapers are also published on websites as online newspapers, and some have even abandoned their print versions entirely. Newspapers developed in the 17th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benjamin Osgood Peirce
Benjamin Osgood Peirce (February 11, 1854 – January 14, 1914) was an American mathematician and a holder of the Hollis Chair of Mathematics and Natural Philosophy at Harvard from 1888 until his death in 1914. Early life Benjamin Osgood Peirce was born to M. (née Seccomb) and Benjamin Osgood Peirce on February 11, 1854, in Beverly, Massachusetts. In 1876, he graduated from Harvard College. He then received a PhD from the Leipzig University in 1879. He then studied in Berlin, Germany for another year. Career Peirce taught at the Boston Latin School for one year. From 1881 to 1884, he taught mathematics at Harvard University. He then taught mathematics and physics as an assistant professor until 1888. In 1888, he became the Hollis Chair of Mathematics and Natural Philosophy. Peirce was elected to the Council of the American Mathematical Society, serving from 1896 to 1898. He was a founder of the American Physical Society when it began in 1899 and was elected to the National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallace Clement Sabine Medal
The Wallace Clement Sabine Medal of the Acoustical Society of America is presented to an individual of any nationality who has advanced the science of architectural acoustics, either by being published in professional journals or periodicals, or by another accomplishment in architectural acoustics at the discretion of the awarding body. The award was named for pioneering acoustician Wallace Clement Sabine. Founded in 1957 by the Acoustical Society of America, the award is given when an outstanding candidate is recognized. Award recipients * Vern Oliver Knudsen (1957) * Floyd R. Watson (1959) * Leo Beranek (1961) * Erwin Meyer (1964) * Hale J. Sabine (1968) * Lothar Cremer (1974) * Cyril M. Harris (1979) * Thomas D. Northwood (1982) * Richard V. Waterhouse (1990) * Harold Marshall (1995) * Russell Johnson (1997) * Alfred C. C. Warnock (2002) * William J. Cavanaugh (2006) * John S. Bradley (2008) * Christopher Jaffe (2011) * Ning Xiang (2014) *David H. Grie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akoustolith
Akoustolith is a porous ceramic material resembling stone. Akoustolith was a patented product of a collaboration between Rafael Guastavino Jr. (the son of Rafael Guastavino) and Harvard professor Wallace Sabine over a period of years starting in 1911. It was used to limit acoustic reflection and noise in large vaulted ceilings. Akoustolith was bonded as an additional layer to the structural tile of the Tile Arch System ceilings built by the Rafael Guastavino Company of New Jersey. The most prevalent use was to aid speech intelligibility in cathedrals and churches prior to the widespread use of public address systems. History Akoustolith was first introduced by the Guastavino Fireproof Construction Company, in collaboration with Wallace Sabine of Harvard University, in 1915. The founder of the Guastavino Company, Rafael Guastavino Sr., had immigrated to the United States from Spain in 1881, bringing with him the method of timbrel-vault construction, also known as cohesive const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabin (unit Of Measurement)
The sabin (or more precisely the square foot sabin) is a unit of sound absorption, used for expressing the total effective absorption for the interior of a room. Sound absorption can be expressed in terms of the percentage of energy absorbed compared with the percentage reflected. It can also be expressed as a coefficient, with a value of 1.00 representing a material which absorbs 100% of the energy, and a value of 0.00 meaning all the sound is reflected. The concept of a unit for absorption was first suggested by American physicist Wallace Clement Sabine, the founder of the field of architectural acoustics. He defined the "open-window unit" as the absorption of of open window. The unit was renamed the sabin after Sabine, and it is now defined as "the absorption due to unit area of a totally absorbent surface". Sabins may be calculated with either imperial or metric units. One square foot of 100% absorbing material has a value of one imperial sabin, and 1 square metre of 100% ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riverbank Laboratories
Riverbank Acoustical Laboratories (RAL), (often referred to as Riverbank or Riverbank Labs), is a NVLAP accredited acoustical testing agency founded by George Fabyan in 1913. The testing service remains a highly respected source of independent acoustical materials testing. RAL specializes in STC ( Sound Transmission Loss per ASTM E90), NRC (Sound Absorption per ASTM C423), IIC ( Impact Sound Transmission per ASTM E492), and Sound Power (ISO 6926) testing. The current address for the company is 1512 Batavia Ave. Geneva, IL. This location also houses the Riverbank Acoustical Museum and Acoustical Library. History The acoustical laboratory building was funded and built by Colonel George Fabyan on his vast Riverbank Estate in Geneva, Illinois. Colonel Fabyan was a patron of obscure sciences, and references to his "Riverbank laboratories" exist as early as 1916. In 1913, Fabyan hired Wallace Clement Sabine to help tune an acoustical levitation machine built according to specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Earls Sabine
Paul Earls Sabine (22 January 1879 – 28 December 1958) was an American acoustic engineer and a specialist on acoustic architecture. Sound absorbing boards made of porous gypsum was sometimes known by the tradename ''Sabinite''. He was a director at the Riverbank Laboratories until his retirement in 1947. Sabine was born in Albion, Illinois, to Methodist pastor Charles and Rebecca Likely née McClure. He was educated at McKendree College (1899) before going to Harvard University from where he received a doctorate in 1915. He taught physics for a while and in 1919 he replaced his cousin Wallace Clement Sabine (who died from cancer) as director of the Riverbank Acoustical Laboratories (which later became a part of the Illinois Institute of Technology). He developed the work of his cousin and specialized in acoustic architecture and was a consultant for architects and involved in the design of the Radio City Music Hall, New York; Fels Planetarium, Philadelphia; and the House and Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decibels
The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 101/10 (approximately ) or root-power ratio of 10 (approximately ). The unit expresses a relative change or an absolute value. In the latter case, the numeric value expresses the ratio of a value to a fixed reference value; when used in this way, the unit symbol is often suffixed with letter codes that indicate the reference value. For example, for the reference value of 1 volt, a common suffix is " V" (e.g., "20 dBV"). Two principal types of scaling of the decibel are in common use. When expressing a power ratio, it is defined as ten times the logarithm in base 10. That is, a change in ''power'' by a factor of 10 corresponds to a 10 dB change in level. When expressing root-power quantities, a change in ''am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reverberation
Reverberation (also known as reverb), in acoustics, is a persistence of sound, after a sound is produced. Reverberation is created when a sound or signal is reflected causing numerous reflections to build up and then decay as the sound is absorbed by the surfaces of objects in the space – which could include furniture, people, and air. This is most noticeable when the sound source stops but the reflections continue, their amplitude decreasing, until zero is reached. Reverberation is frequency dependent: the length of the decay, or reverberation time, receives special consideration in the architectural design of spaces which need to have specific reverberation times to achieve optimum performance for their intended activity. In comparison to a distinct echo, that is detectable at a minimum of 50 to 100 ms after the previous sound, reverberation is the occurrence of reflections that arrive in a sequence of less than approximately 50 ms. As time passes, the amplitude of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanders Theater
Memorial Hall, immediately north of Harvard Yard in Cambridge, Massachusetts, is an imposing High Victorian Gothic building honoring Harvard men's sacrifices in defense of the Union during the American Civil War"a symbol of Boston's commitment to the Unionist cause and the abolitionist movement in America." Built on a former playing field known as the Delta, it was described by Henry James as consisting of James's "three divisions" are known today as (respectively) Sanders Theatre; Annenberg Hall (formerly Alumni Hall or the Great Hall); and Memorial Transept. Beneath Annenberg Hall, Loker Commons offers a number of student facilities. __TOC__ Conception and construction Between 1865 and 1868 an alumni "Committee of Fifty" raised $370,000 (equal to one-twelfth of Harvard's entire endowment at the time) toward a new building in memory of Harvard men who had fought for the Union in the American Civil War, particularly the 136 deada "Hall of Alumni in which students and grad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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