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Charles Todd (pioneer)
Sir Charles Todd (7 July 1826 – 29 January 1910) worked at the Royal Greenwich Observatory 1841–1847 and the Cambridge University observatory from 1847 to 1854. He then worked on telegraphy and undersea cables until engaged by the government of South Australia as astronomical and meteorological observer, and head of the electric telegraph department. Early life and career Todd was the son of grocer Griffith ToddH. P. Hollis, 'Todd, Sir Charles (1826–1910)', rev. K. T. Livingston, Oxford Dictionary of National Biography, Oxford University Press, 2004 and Mary Parker; he was born at Islington, London, the third of five children. Shortly after Charles's birth the family moved to Greenwich, where his father set up as a wine and tea merchant. Charles was educated and spent most of his life in Greenwich before moving to Australia. In December 1841, he entered the service of the Royal Observatory, Greenwich, under Sir George Biddell Airy. He was fortunate that his school leav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islington
Islington () is a district in the north of Greater London, England, and part of the London Borough of Islington. It is a mainly residential district of Inner London, extending from Islington's High Street to Highbury Fields, encompassing the area around the busy High Street, Upper Street, Essex Road (former "Lower Street"), and Southgate Road to the east. Modern definition Islington grew as a sprawling Middlesex village along the line of the Great North Road, and has provided the name of the modern borough. This gave rise to some confusion, as neighbouring districts may also be said to be in Islington. This district is bounded by Liverpool Road to the west and City Road and Southgate Road to the south-east. Its northernmost point is in the area of Canonbury. The main north–south high street, Upper Street splits at Highbury Corner to Holloway Road to the west and St. Paul's Road to the east. The Angel business improvement district (BID), an area centered around the Angel t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomagnetically Induced Current
Geomagnetically induced currents (GIC) are electrical currents induced at the Earth's surface by rapid changes in the geomagnetic field caused by space weather events. GICs can affect the normal operation of long electrical conductor systems such as Electric power transmission, electric transmission grids and buried Pipeline transport, pipelines. The geomagnetic disturbances which induce GICs include geomagnetic storms and substorms where the most severe disturbances occur at high geomagnetic latitudes. Background The Earth's magnetic field varies over a wide range of timescales. The longer-term variations, typically occurring over decades to millennia, are predominantly the result of dynamo action in the Earth's core. Geomagnetic variations on timescales of seconds to years also occur, due to dynamic processes in the ionosphere, magnetosphere and heliosphere. These changes are ultimately tied to variations associated with the solar cycle, solar activity (or sunspot) cycle and are m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel McGowan (engineer)
Samuel Walker McGowan (born 4 January 1829 in Derry, Ireland - died 18 April 1887 Melbourne, Victoria, Australia) was a scientist and public servant who oversaw the creation of the first electrical telegraph line in the Southern Hemisphere. That first telegraph line in Australia ran from Melbourne to Williamstown. Legacy In 1872Mount McGowanwas named by Charles Todd after his Victorian counterpart, while surveying the Overland Telegraph Line. After his untimely passing in 1887, his former staff commissioned a stained glass window in his parish church, the Holy Trinity Anglican Church, Balaclava with plaque inscribed "In memory of Samuel Walker McGowan, Deputy Postmaster General of Victoria, one of the vestry of this parish . . .In 1982, McGowan Place, Dickson, Canberra was named in his memory See also * Postmaster-General's Department The Postmaster-General's Department (PMG) was a department of the Australian federal government, established at Federation in 1901, whose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melbourne
Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Australia and Oceania. Its name generally refers to a metropolitan area known as Greater Melbourne, comprising an urban agglomeration of 31 local municipalities, although the name is also used specifically for the local municipality of City of Melbourne based around its central business area. The metropolis occupies much of the northern and eastern coastlines of Port Phillip Bay and spreads into the Mornington Peninsula, part of West Gippsland, as well as the hinterlands towards the Yarra Valley, the Dandenong and Macedon Ranges. It has a population over 5 million (19% of the population of Australia, as per 2021 census), mostly residing to the east side of the city centre, and its inhabitants are commonly referred to as "Melburnians". The area of Melbourne has been home to Aboriginal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Macgeorge
James Macgeorge (1832 – 9 December 1918) was a Scottish-born architect in South Australia. He is remembered for erecting South Australia's first telegraph line. History James Macgeorge was born in Scotland, the fifth son of tailor Robert Forsyth Macgeorge (1795–1860) and his wife Elizabeth M. Macgeorge, née Duncan (1801–), who with their family emigrated to South Australia aboard the ''Ariadne'', arriving on 13 August 1839. They developed the property they named "Urr brae", now the suburb known as Urrbrae. James was educated at the Church of England Collegiate School (predecessor of St Peter's College), where he was an outstanding pupil. He started practising as an architect in 1855 and in that year responded to a notice in the ''Gazette'' of 25 January advertising a contest to design a water reticulation scheme for Adelaide, then petitioned for an enquiry when no prize was awarded. The same year he set about running a telegraph line between the city and Port Adelaide. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Adelaide
Port Adelaide is a port-side region of Adelaide, approximately northwest of the Adelaide CBD. It is also the namesake of the City of Port Adelaide Enfield council, a suburb, a federal and state electoral division and is the main port for the city of Adelaide. Port Adelaide played an important role in the formative decades of Adelaide and South Australia, with the port being early Adelaide's main supply and information link to the rest of the world. Its Kaurna name, although not officially adopted as a dual name, is Yartapuulti. History Prior to European settlement Port Adelaide was covered with mangrove swamps and tidal mud flats, and lay next to a narrow creek. At this time, it was inhabited by the Kaurna people, who occupied the Adelaide Plains, the Barossa Valley, the western side of the Fleurieu Peninsula, and northwards past Snowtown. The Kaurna people called the Port Adelaide area Yartapuulti, and the whole estuarine area of the Port River ''Yertabulti'' (''Yerta B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adelaide City Centre
Adelaide city centre (Kaurna: Tarndanya) is the inner city locality of Greater Adelaide, the capital city of South Australia. It is known by locals simply as "the City" or "Town" to distinguish it from Greater Adelaide and from the City of Adelaide local government area (which also includes North Adelaide and from the Park Lands around the whole city centre). The population was 15,115 in the . Adelaide city centre was planned in 1837 on a greenfield site following a grid layout, with streets running at right angles to each other. It covers an area of and is surrounded by of park lands.The area of the park lands quoted is based, in the absence of an official boundary between the City and North Adelaide, on an east–west line past the front entrance of Adelaide Oval. Within the city are five parks: Victoria Square in the exact centre and four other, smaller parks. Names for elements of the city centre are as follows: *The "city square mile" (in reality 1.67 square miles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New South Wales
) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of New South Wales , established_title2 = Establishment , established_date2 = 26 January 1788 , established_title3 = Responsible government , established_date3 = 6 June 1856 , established_title4 = Federation , established_date4 = 1 January 1901 , named_for = Wales , demonym = , capital = Sydney , largest_city = capital , coordinates = , admin_center = 128 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 = Margaret Beazley , leader_title3 = Premier , leader_name3 = Dominic Perrottet (Liberal) , national_representation = Parliament of Australia , national_representation_type1 = Senat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Cracknell
Eddie Charles Cracknell born 10 August 2004. Eddie was born in Chester and was commonly known as a British icon for his services to the country. References {{DEFAULTSORT:Cracknell, Edward Charles 1831 births 1893 deaths People from Rochester, Kent English emigrants to Australia 19th-century Australian public servants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adelaide
Adelaide ( ) is the capital city of South Australia, the state's largest city and the fifth-most populous city in Australia. "Adelaide" may refer to either Greater Adelaide (including the Adelaide Hills) or the Adelaide city centre. The demonym ''Adelaidean'' is used to denote the city and the residents of Adelaide. The Traditional Owners of the Adelaide region are the Kaurna people. The area of the city centre and surrounding parklands is called ' in the Kaurna language. Adelaide is situated on the Adelaide Plains north of the Fleurieu Peninsula, between the Gulf St Vincent in the west and the Mount Lofty Ranges in the east. Its metropolitan area extends from the coast to the foothills of the Mount Lofty Ranges, and stretches from Gawler in the north to Sellicks Beach in the south. Named in honour of Queen Adelaide, the city was founded in 1836 as the planned capital for the only freely-settled British province in Australia. Colonel William Light, one of Adelaide's foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alice Springs
Alice Springs ( aer, Mparntwe) is the third-largest town in the Northern Territory of Australia. Known as Stuart until 31 August 1933, the name Alice Springs was given by surveyor William Whitfield Mills after Alice, Lady Todd (''née'' Alice Gillam Bell), wife of the telegraph pioneer Sir Charles Todd. Known colloquially as 'The Alice' or simply 'Alice', the town is situated roughly in Australia's geographic centre. It is nearly equidistant from Adelaide and Darwin. The area is also known locally as Mparntwe to its original inhabitants, the Arrernte, who have lived in the Central Australian desert in and around what is now Alice Springs for tens of thousands of years. Alice Springs had an urban population of 26,534 Estimated resident population, 30 June 2018. in June 2018, having declined an average of 1.16% per year the preceding five years. The town's population accounts for approximately 10 per cent of the population of the Northern Territory. The town straddles th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Ball
A time ball or timeball is a time-signalling device. It consists of a large, painted wooden or metal ball that is dropped at a predetermined time, principally to enable navigators aboard ships offshore to verify the setting of their marine chronometers. Accurate timekeeping is essential to the determination of longitude at sea. Although time balls have since been replaced by electronic time signals, some time balls have remained operational as historical tourist attractions. History The fall of a little ball was in antiquity a way to show to people the time. Ancient Greek clocks had this system in the main square of a city, as in the city of Gaza in the post-Alexander era, and as described by Procopius in his book on Edifices. Time ball stations set their clocks according to transit observations of the positions of the sun and stars. Originally they either had to be stationed at the observatory, or had to keep a very accurate clock at the station which was set manually to obser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
