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Telephane
Henry Sutton (4 September 1855, Ballarat, Victoria – 28 July 1912) was an Australian designer, engineer, and inventor credited with contributions to early developments in electricity, aviation, wireless communication, photography and telephony. Branch is Sutton's great-granddaughter Early life Family Henry Sutton, the second of the eleven children of Richard Henry Sutton (1831 – 1876), and Mary Sutton (1835 – 1894), née Johnson, was born in a tent on the Ballarat goldfields on 4 September 1855. He had three brothers, with whom he was associated in the ''Sutton Brothers'' musical business originally centred on Ballarat,Sutton's Proprietary, Limited, ''The Ballarat Star'', (Saturday, 29 December 1900), p.1 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Television
Mechanical television or mechanical scan television is a television system that relies on a mechanical scanning device, such as a rotating disk with holes in it or a rotating mirror drum, to scan the scene and generate the video signal, and a similar mechanical device at the receiver to display the picture. This contrasts with vacuum tube electronic television technology, using electron beam scanning methods, for example in cathode ray tube (CRT) televisions. Subsequently, modern solid-state liquid-crystal displays (LCD) are now used to create and display television pictures. Mechanical-scanning methods were used in the earliest experimental television systems in the 1920s and 1930s. One of the first experimental wireless television transmissions was by John Logie Baird on October 2, 1925, in London. By 1928 many radio stations were broadcasting experimental television programs using mechanical systems. However the technology never produced images of sufficient quality to become ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballarat, Victoria
Ballarat ( ) is a city in the Central Highlands of Victoria, Australia. At the 2021 Census, Ballarat had a population of 116,201, making it the third largest city in Victoria. Estimated resident population, 30 June 2018. Within months of Victoria separating from the colony of New South Wales in 1851, gold was discovered near Ballarat, sparking the Victorian gold rush. Ballarat subsequently became a thriving boomtown that for a time rivalled Melbourne, the capital of Victoria, in terms of wealth and cultural influence. In 1854, following a period of civil disobedience in Ballarat over gold licenses, local miners launched an armed uprising against government forces. Known as the Eureka Rebellion, it led to the introduction of male suffrage in Australia, and as such is interpreted as the origin of Australian democracy. The rebellion's symbol, the Eureka Flag, has become a national symbol. It was on display at Ballarat's Museum of Australian Democracy at Eureka (MADE) from 2013 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Edison
Thomas Alva Edison (February 11, 1847October 18, 1931) was an American inventor and businessman. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions, which include the phonograph, the motion picture camera, and early versions of the electric light bulb, have had a widespread impact on the modern industrialized world. He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory. Edison was raised in the American Midwest. Early in his career he worked as a telegraph operator, which inspired some of his earliest inventions. In 1876, he established his first laboratory facility in Menlo Park, New Jersey, where many of his early inventions were developed. He later established a botanical laboratory in Fort Myers, Florida, in co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resistive Opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolatorIn PerkinElmer literature. or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air. Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Logie Baird
John Logie Baird FRSE (; 13 August 188814 June 1946) was a Scottish inventor, electrical engineer, and innovator who demonstrated the world's first live working television system on 26 January 1926. He went on to invent the first publicly demonstrated colour television system and the first viable purely electronic colour television picture tube. In 1928 the Baird Television Development Company achieved the first transatlantic television transmission. Baird's early technological successes and his role in the practical introduction of broadcast television for home entertainment have earned him a prominent place in television's history. In 2006, Baird was named as one of the 10 greatest Scottish scientists in history, having been listed in the National Library of Scotland's 'Scottish Science Hall of Fame'. In 2015 he was inducted into the Scottish Engineering Hall of Fame. On 26 January 2017 – IEEE unveiled a bronze street plaque at 22 Frith Street (Bar Italia), London, dedicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nipkow Disk
A Nipkow disk (sometimes Anglicized as Nipkov disk; patented in 1884), also known as scanning disk, is a mechanical, rotating, geometrically operating image scanning device, patented in 1885 by Paul Gottlieb Nipkow. This scanning disk was a fundamental component in mechanical television, and thus the first televisions, through the 1920s and 1930s. Operation The device is a mechanically spinning disk of any suitable material (metal, plastic, cardboard, etc.), with a series of equally-distanced circular holes of equal diameter drilled in it. The holes may also be square for greater precision. These holes are positioned to form a single-turn spiral starting from an external radial point of the disk and proceeding to the center of the disk. When the disk rotates, the holes trace circular ring patterns, with inner and outer diameter depending on each hole's position on the disk and thickness equal to each hole's diameter. The patterns may or may not partially overlap, depending on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerr Effect
The Kerr effect, also called the quadratic electro-optic (QEO) effect, is a change in the refractive index of a material in response to an applied electric field. The Kerr effect is distinct from the Pockels effect in that the induced index change is directly proportional to the ''square'' of the electric field instead of varying linearly with it. All materials show a Kerr effect, but certain liquids display it more strongly than others. The Kerr effect was discovered in 1875 by Scottish physicist John Kerr. Two special cases of the Kerr effect are normally considered, these being the Kerr electro-optic effect, or DC Kerr effect, and the optical Kerr effect, or AC Kerr effect. Kerr electro-optic effect The Kerr electro-optic effect, or DC Kerr effect, is the special case in which a slowly varying external electric field is applied by, for instance, a voltage on electrodes across the sample material. Under this influence, the sample becomes birefringent, with different indices ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ann Moyal
Ann Veronica Helen Moyal AM FRSN FAHA (née Hurley, formerly Cousins and Mozley; 23 February 1926 – 21 July 2019) was an Australian historian known for her work in the history of science. She held academic positions at the Australian National University (ANU), New South Wales Institute of Technology, and Griffith University, and later worked as an independent scholar. Early life Moyal was born on 23 February 1926 in Northbridge, Sydney, New South Wales. Her father was a bank teller. She grew up in Sydney, but was sent to Canberra High School for her final year of secondary schooling. She graduated Bachelor of Arts with first-class honours from the University of Sydney, and was subsequently awarded a scholarship to the University of London. However, she abandoned her postgraduate studies after a year to become a research assistant. Career Moyal worked as a research assistant to Lord Beaverbrook from 1954 to 1958, while he was working on ''Men and Power 1917–1918''. She ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melbourne Cup
The Melbourne Cup is a Thoroughbred horse race held in Melbourne, Australia. It is a 3200-metre race for three-year-olds and over, conducted by the Victoria Racing Club on the Flemington Racecourse in Melbourne, Victoria as part of the Melbourne Spring Racing Carnival. It is the richest "two-mile" handicap in the world and one of the richest turf races. The event starts at 3:00 pm on the first Tuesday of November and is known locally as "the race that stops the nation". The Melbourne Cup has a long tradition, with the first race held in 1861. It was originally run over but was shortened to in 1972 when Australia adopted the metric system. This reduced the distance by , and Rain Lover's 1968 race record of 3:19.1 was accordingly adjusted to 3:17.9. The present record holder is the 1990 winner Kingston Rule with a time of 3:16.3. Qualifying and race conditions The race is a quality handicap for horses three years old and over, run over a distance of 3200 metres, on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Argus (Melbourne)
''The Argus'' was an Australian daily morning newspaper in Melbourne from 2 June 1846 to 19 January 1957, and was considered to be the general Australian newspaper of record for this period. Widely known as a conservative newspaper for most of its history, it adopted a left-leaning approach from 1949. ''The Argus''s main competitor was David Syme's more liberal-minded newspaper, ''The Age''. History The newspaper was originally owned by William Kerr, who was also Melbourne's town clerk from 1851–1856 and had been a journalist at the ''Sydney Gazette'' before moving to Melbourne in 1839 to work on John Pascoe Fawkner's newspaper, the '' Port Phillip Patriot''. The first edition was published on 2 June 1846. The paper soon became known for its scurrilous abuse and sarcasm, and by 1853, after he had lost a series of libel lawsuits, Kerr was forced to sell the paper's ownership to avoid financial ruin. The paper was then published by Edward Wilson. By 1855, it had a daily c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Broadcasting Corporation
The Australian Broadcasting Corporation (ABC) is the national broadcaster of Australia. It is principally funded by direct grants from the Australian Government and is administered by a government-appointed board. The ABC is a publicly-owned body that is politically independent and fully accountable, with its charter enshrined in legislation, the ''Australian Broadcasting Corporation Act 1983''. ABC Commercial, a profit-making division of the corporation, also helps to generate funding for content provision. The ABC was established as the Australian Broadcasting Commission on 1 July 1932 by an act of federal parliament. It effectively replaced the Australian Broadcasting Company, a private company established in 1924 to provide programming for A-class radio stations. The ABC was given statutory powers that reinforced its independence from the government and enhanced its news-gathering role. Modelled after the British Broadcasting Corporation (BBC), which is funded by a tel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballarat East Fire Station
The Ballarat East Fire Station, in Ballarat East, Victoria, Australia is the oldest continually operating fire station in the Southern Hemisphere. The tower was designed by local architect Henry Caselli and was built in 1864 by William Cowland, a builder and fire brigade volunteer. Caselli's design for an Engine House was not built; an 1858-built structure was used. The Engine House was replaced by a new one in 1916. It was one site of the first operational telephone, made by Henry Sutton, which connected this station to the Ballarat Fire Station The 'Ballarat Fire Station' is an historic fire station in Ballarat, Victoria, Australia which was opened in 1856. On the morning of 7 December 1859 a large fire destroyed twenty-one hotels, stores and dwellings, a large number of outhouses and p ... in Ballarat, to help the two stations pinpoint the locations of fires and coordinate their responses. It is located at 20-22 Barkly Street in Ballarat East. References External ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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