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Euclid Speidell
Euclid Speidell (died 1702) was an English customs official and mathematics teacher known for his writing on logarithms. Speidell published revised and expanded versions of texts by his father, John Speidell. He also published a book called ''Logarithmotechnia, or, The making of numbers called logarithms to twenty five places from a geometrical figure'' in 1688. Speidell lived in Angel Alley in the 1680s and 1690s, according to the Survey of London The Survey of London is a research project to produce a comprehensive architectural survey of central London and its suburbs, or the area formerly administered by the London County Council. It was founded in 1894 by Charles Robert Ashbee, an Ar .... from Survey of London ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Speidell
John Speidell ( fl. 1600–1634) was an English mathematician. He is known for his early work on the calculation of logarithms. Speidell was a mathematics teacher in London and one of the early followers of the work John Napier had previously done on natural logarithms. In 1619 Speidell published a table entitled "New Logarithmes" in which he calculated the natural logarithms of sines, tangents, and secants. He then diverged from Napier's methods in order to ensure all of the logarithms were positive. A new edition of "New Logarithmes" was published in 1622 and contained an appendix with the natural logarithms of all numbers 1-1000. Along with William Oughtred and Richard Norwood, Speidell helped push toward the abbreviations of trigonometric functions. Speidel published a number of work about mathematics, including ''An Arithmeticall Extraction'' in 1628. His son, Euclid Speidell Euclid Speidell (died 1702) was an English customs official and mathematics teacher known for his wri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Survey Of London
The Survey of London is a research project to produce a comprehensive architectural survey of central London and its suburbs, or the area formerly administered by the London County Council. It was founded in 1894 by Charles Robert Ashbee, an Arts-and-Crafts designer, architect and social reformer and was motivated by a desire to record and preserve London's ancient monuments. The first volume was published in 1900, but the completion of the series remains far in the future. The London Survey Committee was initially a volunteer effort, but from 1910 published the surveys jointly with the London County Council (later the Greater London Council, GLC). From 1952, the voluntary committee was disbanded, and all survey work was wholly council-run. Following the abolition of the GLC in 1986, responsibility for the survey was taken over by the Royal Commission on the Historical Monuments of England (RCHME). Since 2013, it has been administered by The Bartlett School of Architecture, Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Survey Of London
The Survey of London is a research project to produce a comprehensive architectural survey of central London and its suburbs, or the area formerly administered by the London County Council. It was founded in 1894 by Charles Robert Ashbee, an Arts-and-Crafts designer, architect and social reformer and was motivated by a desire to record and preserve London's ancient monuments. The first volume was published in 1900, but the completion of the series remains far in the future. The London Survey Committee was initially a volunteer effort, but from 1910 published the surveys jointly with the London County Council (later the Greater London Council, GLC). From 1952, the voluntary committee was disbanded, and all survey work was wholly council-run. Following the abolition of the GLC in 1986, responsibility for the survey was taken over by the Royal Commission on the Historical Monuments of England (RCHME). Since 2013, it has been administered by The Bartlett School of Architecture, Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Sutton (instrument Maker)
Henry Sutton (ca. 1637-1665) was an English instrument maker who operated out of London from 1650 to 1661. He is known for his high-quality engravings of scales and quadrants. His colleagues included Samuel Knibb (1625-1674) and John Marke (17th century). He was described in the 18th century by Edmund Stone thus: "Mr Sutton's Quadrants, made above one hundred Years ago, are the finest divided Instruments in the World; and the Regularity and Exactness of the vast Number of Circles drawn upon them is highly delightful to behold". Little is known of Sutton's life beyond his mathematical contributions. He died of the plague in 1665. His place of work and the range of his stock can be determined from the following advertisement, written on a quadrant dated 1658: "This Instrument or any of the Mathematiques are made in Brass or Wood by Henry Sutton Instrument maker behind the royall exchange". The Royal Exchange, which is now a shopping complex, was a major landmark in mid 17th-centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17th-century English Mathematicians
The 17th century lasted from January 1, 1601 ( MDCI), to December 31, 1700 ( MDCC). It falls into the early modern period of Europe and in that continent (whose impact on the world was increasing) was characterized by the Baroque cultural movement, the latter part of the Spanish Golden Age, the Dutch Golden Age, the French ''Grand Siècle'' dominated by Louis XIV, the Scientific Revolution, the world's first public company and megacorporation known as the Dutch East India Company, and according to some historians, the General Crisis. From the mid-17th century, European politics were increasingly dominated by the Kingdom of France of Louis XIV, where royal power was solidified domestically in the civil war of the Fronde. The semi-feudal territorial French nobility was weakened and subjugated to the power of an absolute monarchy through the reinvention of the Palace of Versailles from a hunting lodge to a gilded prison, in which a greatly expanded royal court could be more easily k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17th-century Births
The 17th century lasted from January 1, 1601 ( MDCI), to December 31, 1700 ( MDCC). It falls into the early modern period of Europe and in that continent (whose impact on the world was increasing) was characterized by the Baroque cultural movement, the latter part of the Spanish Golden Age, the Dutch Golden Age, the French ''Grand Siècle'' dominated by Louis XIV, the Scientific Revolution, the world's first public company and megacorporation known as the Dutch East India Company, and according to some historians, the General Crisis. From the mid-17th century, European politics were increasingly dominated by the Kingdom of France of Louis XIV, where royal power was solidified domestically in the civil war of the Fronde. The semi-feudal territorial French nobility was weakened and subjugated to the power of an absolute monarchy through the reinvention of the Palace of Versailles from a hunting lodge to a gilded prison, in which a greatly expanded royal court could be more easily k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year Of Birth Uncertain
A year or annus is the orbital period of a planetary body, for example, the Earth, moving in Earth's orbit, its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar climate, subpolar regions around the planet, four seasons are generally recognized: spring (season), spring, summer, autumn and winter. In tropics, tropical and subtropics, subtropical regions, several geographical sectors do not present defined seasons; but in the tropics#Seasons and climate, seasonal tropics, the annual wet season, wet and dry seasons are recognized and tracked. A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar. The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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