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John Keith Roberts
John Keith Roberts (16 April 1897 – 126 April 1944) was an Australian physicist who was awarded an 1851 Exhibition Scholarship, and went to England, where he studied under Sir Ernest Rutherford at the University of Cambridge's Cavendish Laboratory. During the Second World War he was the chief scientist at the Royal Navy's Anti-Submarine Experimental Establishment in Fairlie, Scotland, where he oversaw the development of improved techniques for detecting submarines. Biography John Keith Roberts was born in the Melbourne suburb of Kew on 16 April 1897, the eldest of the two children of Henry Charles Roberts, a stockbroker, and his wife Winifred Mary French. He had a sister, Winifred. He was educated at Camberwell Grammar School, from which he graduated in 1913. Although he had passed the entrance examinations to university, he was, at age 16, too young to matriculate. He therefore spent a year with a firm in Melbourne, where he learned bookkeeping and business methods. Rober ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kew, Victoria
Kew (;) is a suburb of Melbourne, Victoria (Australia), Victoria, Australia, 5 km east from Melbourne's Melbourne central business district, Central Business District, located within the City of Boroondara Local government areas of Victoria, local government area. Kew recorded a population of 24,499 at the 2021 Australian census, 2021 census. City of Kew, A city in its own right from 1860 to 1994, Kew was amalgamated with the cities of City of Hawthorn, Hawthorn and City of Camberwell, Camberwell to form the City of Boroondara. The suburb borders the Yarra River to the west and northwest, with Kew East, Victoria, Kew East to the northeast, Hawthorn, Victoria, Hawthorn and Hawthorn East, Victoria, Hawthorn East to its south, and with Balwyn, Victoria, Balwyn, Balwyn North, Victoria, Balwyn North and Deepdene, Victoria, Deepdene to the east. History Prior to the establishment of Melbourne, the area was inhabited by the Wurundjeri peoples. In the 1840s European settlers name ... [...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] |
River Clyde
The River Clyde ( gd, Abhainn Chluaidh, , sco, Clyde Watter, or ) is a river that flows into the Firth of Clyde in Scotland. It is the ninth-longest river in the United Kingdom, and the third-longest in Scotland. It runs through the major city of Glasgow. Historically, it was important to the British Empire because of its role in shipbuilding and trade. To the Romans, it was , and in the early medieval Cumbric language, it was known as or . It was central to the Kingdom of Strathclyde (). Etymology The exact etymology of the river's name is unclear, though it is known that the name is ancient: It was called or by the Britons and by the Romans. It is therefore likely that the name comes from a Celtic language—most likely Old British. But there is more than one old Celtic word that the river's name could plausibly derive from. One possible root is the Common Brittonic , meaning 'loud' or 'loudly'. More likely, the river was named after a local Celtic goddess, '' Clōta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pirani Gauge
The Pirani gauge is a robust thermal conductivity gauge used for the measurement of the pressures in vacuum systems. It was invented in 1906 by Marcello Pirani. Marcello Stefano Pirani was a German physicist working for Siemens & Halske which was involved in the vacuum lamp industry. In 1905 their product was tantalum lamps which required a high vacuum environment for the filaments. The gauges that Pirani was using in the production environment were some fifty McLeod gauges, each filled with 2 kg of mercury in glass tubes. Pirani was aware of the gas thermal conductivity investigations of Kundt and Warburg (1875) published thirty years earlier and the work of Marian Smoluchowski (1898). In 1906 he described his "directly indicating vacuum gauge" that used a heated wire to measure vacuum by monitoring the heat transfer from the wire by the vacuum environment. Structure The Pirani gauge consists of a metal sensor wire (usually gold plated tungsten or platinum) suspended in a tube ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Society
The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, recognising excellence in science, supporting outstanding science, providing scientific advice for policy, education and public engagement and fostering international and global co-operation. Founded on 28 November 1660, it was granted a royal charter by King Charles II as The Royal Society and is the oldest continuously existing scientific academy in the world. The society is governed by its Council, which is chaired by the Society's President, according to a set of statutes and standing orders. The members of Council and the President are elected from and by its Fellows, the basic members of the society, who are themselves elected by existing Fellows. , there are about 1,700 fellows, allowed to use the postnominal title FRS (Fellow of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuberculosis
Tuberculosis (TB) is an infectious disease usually caused by '' Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can also affect other parts of the body. Most infections show no symptoms, in which case it is known as latent tuberculosis. Around 10% of latent infections progress to active disease which, if left untreated, kill about half of those affected. Typical symptoms of active TB are chronic cough with blood-containing mucus, fever, night sweats, and weight loss. It was historically referred to as consumption due to the weight loss associated with the disease. Infection of other organs can cause a wide range of symptoms. Tuberculosis is spread from one person to the next through the air when people who have active TB in their lungs cough, spit, speak, or sneeze. People with Latent TB do not spread the disease. Active infection occurs more often in people with HIV/AIDS and in those who smoke. Diagnosis of active TB is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthritis
Arthritis is a term often used to mean any disorder that affects joints. Symptoms generally include joint pain and stiffness. Other symptoms may include redness, warmth, swelling, and decreased range of motion of the affected joints. In some types of arthritis, other organs are also affected. Onset can be gradual or sudden. There are over 100 types of arthritis. The most common forms are osteoarthritis (degenerative joint disease) and rheumatoid arthritis. Osteoarthritis usually occurs with age and affects the fingers, knees, and hips. Rheumatoid arthritis is an autoimmune disorder that often affects the hands and feet. Other types include gout, lupus, fibromyalgia, and septic arthritis. They are all types of rheumatic disease. Treatment may include resting the joint and alternating between applying ice and heat. Weight loss and exercise may also be useful. Recommended medications may depend on the form of arthritis. These may include pain medications such as ibuprofen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kensington
Kensington is a district in the Royal Borough of Kensington and Chelsea in the West End of London, West of Central London. The district's commercial heart is Kensington High Street, running on an east–west axis. The north-east is taken up by Kensington Gardens, containing the Albert Memorial, the Serpentine Gallery and John Hanning Speke, Speke's monument. South Kensington and Gloucester Road, London, Gloucester Road are home to Imperial College London, the Royal College of Music, the Royal Albert Hall, Natural History Museum, London, Natural History Museum, Victoria and Albert Museum, and Science Museum, London, Science Museum. The area is also home to many embassies and consulates. Name The Manorialism, manor of ''Chenesitone'' is listed in the Domesday Book of 1086, which in the Old English language, Anglo-Saxon language means "Chenesi's List of generic forms in place names in Ireland and the United Kingdom, ton" (homestead/settlement). One early spelling is ''Kesyngton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur Sanderson & Sons
Arthur Sanderson & Sons Ltd, now known simply as Sanderson, is a British manufacturer of fabrics and wallpaper, founded in 1860. Company The company was founded in 1860 in Islington, London, by Arthur Sanderson (1829–1882), who began by importing French wallpapers. After several moves, Sanderson established a factory of his own in Chiswick in 1879. An extension to the old factory was designed by Charles Voysey in 1902, and is now a Grade II* listed building called Voysey House. The old Chiswick factory, facing Voysey House, was gutted by fire in 1928 and is now used as offices. After Arthur Sanderson's death, the business was taken over by his three sons, John, Arthur Bengough, and Harold. In 1919, Sanderson and Sons opened a new factory in Uxbridge to manufacture fabrics. In 1924, Arthur Bengough Sanderson received a Royal Warrant as "Purveyor of Wallpapers and Paints to King George V". The original blocks for William Morris's wallpaper designs were included in the pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bismuth
Bismuth is a chemical element with the Symbol (chemistry), symbol Bi and atomic number 83. It is a post-transition metal and one of the pnictogens, with chemical properties resembling its lighter group 15 siblings arsenic and antimony. Elemental bismuth occurs naturally, and its sulfide and oxide forms are important commercial ores. The free element is 86% as dense as lead. It is a brittle metal with a silvery-white color when freshly produced. Passivation (chemistry), Surface oxidation generally gives samples of the metal a somewhat rosy cast. Further oxidation under heat can give bismuth a vividly Iridescence, iridescent appearance due to thin-film interference. Bismuth is both the most Diamagnetism, diamagnetic element and one of the least Thermal conductivity, thermally conductive metals known. Bismuth was long considered the element with the highest atomic mass whose nuclei do not spontaneously decay. However, in 2003 it was discovered to be extremely weakly radioactive. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Petavel
Sir Joseph Ernest Petavel KBE FRS D.Sc. (14 August 1873 – 31 March 1936) was a British physicist and the 2nd Director of the National Physical Laboratory. He was born in London and educated at Lausanne, Geneva, before he joined University College, London, in 1893, where he studied mechanical and electrical engineering. He was elected a Fellow of the Royal Society in 1907. He was the second director of the NPL in Bushy Park from 1919 to 1936, living in Bushy House. During his time there he devised the Petavel gauge for the measurement of the pressures within exploding gases. He was invested Knight Commander of the Order of the British Empire (KBE) in the 1920 civilian war honours for his wartime work as Chairman of Aerodynamics Sub-Committee of the Advisory Committee on Aeronautics. He died at Bushy House and was buried in the west side of Highgate Cemetery Highgate Cemetery is a place of burial in north London, England. There are approximately 170,000 people buried i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutron
The neutron is a subatomic particle, symbol or , which has a neutral (not positive or negative) charge, and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms. Since protons and neutrons behave similarly within the nucleus, and each has a mass of approximately one atomic mass unit, they are both referred to as nucleons. Their properties and interactions are described by nuclear physics. Protons and neutrons are not elementary particles; each is composed of three quarks. The chemical properties of an atom are mostly determined by the configuration of electrons that orbit the atom's heavy nucleus. The electron configuration is determined by the charge of the nucleus, which is determined by the number of protons, or atomic number. The number of neutrons is the neutron number. Neutrons do not affect the electron configuration, but the sum of atomic and neutron numbers is the mass of the nucleus. Atoms of a chemical element t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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