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Slide Calculator
file:Addiator.jpg, An Addiator Duplex, featuring an addition side A slide calculator, also known as an Addiator Generic trademark, after the best-known brand, is a mechanical calculator capable of addition and subtraction, once made by Addiator Gesellschaft of Berlin, Germany. Variants of it were manufactured from 1920 until 1982. The devices were made obsolete by the electronic calculator. Design The Addiator is composed of sheet-metal sliders inside a metal envelope, manipulated by a stylus, with an innovative carry mechanism, doing ''subtract ten, carry one'' with a simple stylus movement. Some types of Addiators can also handle negative numbers (with a complementary bottom window or by providing a subtraction mode on the back side of the device). The Addiator also handles non-decimal measurements, like feet and inches, or pre-decimalization pounds, shillings, and pence. Addition and subtraction require different "screens", handled by turning the instrument over, or flippin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabdology
In 1617 a treatise in Latin titled ''Rabdologiæ'' and written by John Napier was published in Edinburgh. Printed three years after his treatise on the discovery of logarithms and in the same year as his death, it describes three devices to aid arithmetic calculations. The devices themselves don't use logarithms, rather they are tools to reduce multiplication and division of natural numbers to simple addition and subtraction operations. The first device, which by then was already popularly used and known as Napier's bones, was a set of rods inscribed with the multiplication table. Napier coined the word rabdology (from Greek ῥάβδος [rhabdos], rod and λόγoς [logos] calculation or reckoning) to describe this technique. The rods were used to multiply, divide and even find the square roots and cube roots of numbers. The second device was a promptuary (Latin ''promptuarium'' meaning storehouse) and consisted of a large set of strips that could multiply multidigit numbers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danville, Virginia
Danville is an independent city (United States), independent city in the Virginia, Commonwealth of Virginia in the United States. The city is located in the Southside (Virginia), Southside Virginia region and on the fall line of the Dan River (Virginia), Dan River. The city was a center of Tobacco in the United States, tobacco production and was an area of Confederate activity during the American Civil War, due to its strategic location on the Richmond and Danville Railroad. In April 1865, Danville briefly served as the third and final capital of the Confederate States of America, Confederacy before its surrender later that year. Danville has maintained an African American majority population since the Reconstruction era. During this time, the city was represented politically by African American members of the Readjuster Party. However, this changed following the Danville Massacre of 1883, after which Democrats regained control both locally and statewide. Decades later, during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danville Register & Bee
The ''Danville Register & Bee'' is a daily newspaper serving Danville, Virginia, United States. It is owned by Lee Enterprises Lee Enterprises, Inc. is a publicly traded American media company. It publishes 72 daily newspapers in 25 states, and more than 350 weekly, classified, and specialty publications. Lee Enterprises was founded in 1890 by Alfred Wilson Lee and is b .... History The paper was previously published as ''The Danville Register'' and ''The Bee''. The two were merged on July 1, 1989. ''The Register'' was founded as ''The Daily Register'', in February 1882. ''The Bee'' was founded as the ''Danville Daily Bee'', in 1899. Starting June 17, 2023, the print edition of the newspaper will be reduced to three days a week: Tuesday, Thursday and Saturday. Also, the newspaper will transition from being delivered by a traditional newspaper delivery carrier to mail delivery by the U.S. Postal Service. References External links * * 1882 establishments in Virgini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glasgow
Glasgow is the Cities of Scotland, most populous city in Scotland, located on the banks of the River Clyde in Strathclyde, west central Scotland. It is the List of cities in the United Kingdom, third-most-populous city in the United Kingdom and the 27th-most-populous city in Europe, and comprises Wards of Glasgow, 23 wards which represent the areas of the city within Glasgow City Council. Glasgow is a leading city in Scotland for finance, shopping, industry, culture and fashion, and was commonly referred to as the "second city of the British Empire" for much of the Victorian era, Victorian and Edwardian eras. In , it had an estimated population as a defined locality of . More than 1,000,000 people live in the Greater Glasgow contiguous urban area, while the wider Glasgow City Region is home to more than 1,800,000 people (its defined functional urban area total was almost the same in 2020), around a third of Scotland's population. The city has a population density of 3,562 p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daily Record (Scotland)
The ''Daily Record'' is a Scottish national tabloid newspaper based in Glasgow. The newspaper is published Monday–Saturday and its website is updated on an hourly basis, seven days a week. The ''Record'' sister title is the '' Sunday Mail''. Both titles are owned by Reach plc and have a close kinship with the UK-wide ''Daily Mirror'' as a result. The ''Record'' covers UK news and sport with a Scottish focus. Its website boasts the largest readership of any publisher based in Scotland. The title was at the forefront of technological advances in publishing throughout the 20th century and became the first European daily newspaper to be produced in full colour. As the ''Record'' print circulation has declined in line with other national papers, it has focused increasing attention on expanding its digital news operation. Foundation and early history The ''Daily Record'' was first published in 1895 in Glasgow as a sister title to the ''North British Daily Mail''. The ''Mail'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsfield, Massachusetts
Pittsfield is the most populous city and the county seat of Berkshire County, Massachusetts, United States. It is the principal city of the Pittsfield, Massachusetts Metropolitan Statistical Area which encompasses all of Berkshire County. Pittsfield’s population was 43,927 at the 2020 United States census, 2020 census. Although its population has declined in recent decades, Pittsfield remains the third-largest municipality in Western Massachusetts, behind only Springfield, Massachusetts, Springfield and Chicopee, Massachusetts, Chicopee. In 2017, the Arts Vibrancy Index compiled by the National Center for Arts Research ranked Pittsfield and Berkshire County as the number-one medium-sized community in the nation for the arts. History The Mohicans, an Algonquian people, inhabited Pittsfield and the surrounding area until the early 18th century, when the population was greatly reduced by war and disease brought by white invaders. Many migrated westward or were subjugated to live o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Berkshire Eagle
''The Berkshire Eagle'' is an American daily newspaper published in Pittsfield, Massachusetts, and covering all of Berkshire County, as well as four New York communities near Pittsfield. It is considered a newspaper of record for Berkshire County, Massachusetts. Published daily since 1892, ''The Eagle'' has been owned since 1 May 2016 by a group of local Berkshire County investors, who purchased ''The Eagle'' and its three Vermont sister newspapers for an undisclosed sum from Digital First Media. ''The Eagle'' has won the New England Newspaper and Press Association's Newspaper of the Year Award for Sunday newspapers, weekday newspapers, or both, for seven consecutive years (2018-2024), as detailed in the awards section below. History Origins ''The Eagles roots go back to a weekly newspaper, the ''Western Star'', founded in Stockbridge, Massachusetts in 1789. Over time, this newspaper changed its name, ownership, and place of publication multiple times, but maintained cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hayyim Selig Slonimski
Ḥayyim Selig ben Ya'akov Slonimski (; March 31, 1810 – May 15, 1904), also known by Hebrew abbreviations, his acronym ḤaZaS (), was a Hebrew publisher, mathematician, astronomer, inventor, science writer, and rabbi. He was among the first to write books on science for a broad Jewish audience, and was the founder of ''Ha-Tsfira'', the first Hebrew-language newspaper with an emphasis on the sciences. Biography Ḥayyim Selig Slonimski was born in Białystok, Bialystok, in the Grodno Governorate of the Russian Empire (present-day Poland), the oldest son of Rabbi Avraham Ya'akov Bishka and Leah (Neches) Bishka. His father belonged to a family of rabbis, writers, publishers and printers, and his mother was the daughter of Rabbi Yeḥiel Neches, an owner of a well-known Beth midrash, beit midrash in Bialystok. Slonimski had a traditional Jewish upbringing and Talmudic education; without a formal secular education, Slonimski taught himself mathematics, astronomy, and foreign langua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Architect
An architect is a person who plans, designs, and oversees the construction of buildings. To practice architecture means to provide services in connection with the design of buildings and the space within the site surrounding the buildings that have human occupancy or use as their principal purpose. Etymologically, the term architect derives from the Latin , which derives from the Greek (''-'', chief + , builder), i.e., chief builder. The professional requirements for architects vary from location to location. An architect's decisions affect public safety, and thus the architect must undergo specialised training consisting of advanced education and a ''practicum'' (or internship) for practical experience to earn a Occupational licensing, license to practice architecture. Practical, technical, and academic requirements for becoming an architect vary by jurisdiction though the formal study of architecture in academic institutions has played a pivotal role in the development of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abacus
An abacus ( abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Hindu–Arabic numeral system. An abacus consists of a two-dimensional array of Sliding (motion), slidable beads (or similar objects). In their earliest designs, the beads could be loose on a flat surface or sliding in grooves. Later the beads were made to slide on rods and built into a frame, allowing faster manipulation. Each rod typically represents one Numerical digit, digit of a multi-digit number laid out using a positional numeral system such as base ten (though some cultures used different numerical bases). Roman Empire, Roman and East Asian abacuses use a system resembling bi-quinary coded decimal, with a top deck (containing one or two beads) representing fives and a bottom deck (containing four or five beads) representing ones. Natural numbers are normally use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claude Perrault
Claude Perrault (; 25 September 1613 – 9 October 1688) was a French physician and amateur architect, best known for his participation in the design of the east façade of the Louvre in Paris."Claude Perrault. French physician and architect" ''Britannica'' online. Retrieved 5 May 2022. He also designed the Paris Observatory and was an and author who wrote treatises on architecture, , and |
