|
Pykecrete
Pykrete is a frozen ice composite, originally made of approximately 14% sawdust or some other form of wood pulp (such as paper) and 86% ice by weight (6 to 1 by weight). During World War II, Geoffrey Pyke proposed it as a candidate material for a supersized aircraft carrier for the British Royal Navy. Pykrete features unusual properties, including a relatively slow melting rate due to its low thermal conductivity, as well as a vastly improved strength and toughness compared to ordinary ice. These physical properties can make the material comparable to concrete, as long as the material is kept frozen. Pykrete is slightly more difficult to form than concrete, as it expands during the freezing process. However, it can be repaired and maintained using seawater as a raw material. The mixture can be moulded into any shape and frozen, and it will be tough and durable, as long as it is kept at or below freezing temperature. Resistance to gradual creep or sagging is improved by lowering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Block Of Pykrete
Block or blocked may refer to: Arts, entertainment and media Broadcasting * Block programming, the result of a programming strategy in broadcasting * W242BX, a radio station licensed to Greenville, South Carolina, United States known as ''96.3 the Block '' * WFNZ-FM, a radio station licensed to Harrisburg, North Carolina, United States, branded as ''92.7 The Block'' * Blocked (''The Flash''), an episode of the television series ''The Flash'' Music * Block Entertainment, a record label * Blocks Recording Club, a record label * Woodblock (instrument), a small piece of slit drum made from one piece of wood and used as a percussion instrument * "Blocks", by C418 from ''Minecraft - Volume Beta'', 2013 Toys * Toy block, one of a set of wooden or plastic pieces, of various shapes * Unit block, a type of standardized wooden toy block for children Video game * Blocked (video game), a puzzle game for the iPhone and iPod Touch Building and construction * Breeze block, cinder block or c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herman Francis Mark
Herman Francis Mark (May 3, 1895, Vienna – April 6, 1992, Austin, Texas) was an Austrian-American chemist regarded for his contributions to the development of polymer science. Mark's x-ray diffraction work on the molecular structure of fibers provided important evidence for the macromolecular theory of polymer structure. Together with Houwink he formulated an equation, now called the Mark–Houwink or Mark–Houwink–Sakurada equation, describing the dependence of the intrinsic viscosity of a polymer on its relative molecular mass (molecular weight). He was a long-time faculty at Polytechnic Institute of Brooklyn. In 1946, he established the '' Journal of Polymer Science''. Biography Early life ''Hermann Franz'' Mark was born in Vienna in 1895, the son of Hermann Carl Mark, a physician, and Lili Mueller. Mark's father was a Jew who converted to Christianity (Lutheran Church) upon marriage. Several early stimuli apparently steered Herman Mark to science. He was greatly infl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Dome - Foto Bart Van Overbeeke 28453
Ice is water frozen into a solid state, typically forming at or below temperatures of 0 degrees Celsius or Depending on the presence of impurities such as particles of soil or bubbles of air, it can appear transparent or a more or less opaque bluish-white color. In the Solar System, ice is abundant and occurs naturally from as close to the Sun as Mercury to as far away as the Oort cloud objects. Beyond the Solar System, it occurs as interstellar ice. It is abundant on Earth's surfaceparticularly in the polar regions and above the snow lineand, as a common form of precipitation and deposition, plays a key role in Earth's water cycle and climate. It falls as snowflakes and hail or occurs as frost, icicles or ice spikes and aggregates from snow as glaciers and ice sheets. Ice exhibits at least eighteen phases ( packing geometries), depending on temperature and pressure. When water is cooled rapidly (quenching), up to three types of amorphous ice can form depending on its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hastings Ismay, 1st Baron Ismay
Hastings Lionel Ismay, 1st Baron Ismay (21 June 1887 – 17 December 1965), was a diplomat and general in the British Indian Army who was the first Secretary General of NATO. He also was Winston Churchill's chief military assistant during the Second World War. Ismay was born in Nainital, India, in 1887, and educated in the United Kingdom at Charterhouse School and the Royal Military College, Sandhurst. After Sandhurst, he joined the Indian Army as an officer of the 21st Prince Albert Victor's Own Cavalry. During the First World War, he served with the Camel Corps in British Somaliland, where he joined in the British fight against the "Mad Mullah", Mohammed Abdullah Hassan. In 1925, Ismay became an Assistant Secretary of the Committee of Imperial Defence (CID). After being promoted to the rank of colonel, he served as the military secretary for Lord Willingdon, the Viceroy of India, then returned to the CID as Deputy Secretary in 1936. On 1 August 1938, shortly before ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernest King
Ernest Joseph King (23 November 1878 – 25 June 1956) was an American naval officer who served as Commander in Chief, United States Fleet (COMINCH) and Chief of Naval Operations (CNO) during World War II. As COMINCH-CNO, he directed the United States Navy's operations, planning, and administration and was a member of the Joint Chiefs of Staff. He was the United States Navy's second most senior officer in World War II after Fleet Admiral William D. Leahy, who served as Chief of Staff to the Commander in Chief. Born in Lorain, Ohio, King served in the Spanish–American War while still attending the United States Naval Academy. He received his first command in 1914, leading the destroyer in the occupation of Veracruz. During World War I, he served on the staff of Vice-Admiral Henry T. Mayo, the commander of the United States Atlantic Fleet. After the war, King served as head of the Naval Postgraduate School, commanded a submarine squadron, and served as C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franklin Delano Roosevelt
Franklin Delano Roosevelt (; ; January 30, 1882April 12, 1945), often referred to by his initials FDR, was an American politician and attorney who served as the 32nd president of the United States from 1933 until his death in 1945. As the leader of the Democratic Party, he won a record four presidential elections and became a central figure in world events during the first half of the 20th century. Roosevelt directed the federal government during most of the Great Depression, implementing his New Deal domestic agenda in response to the worst economic crisis in U.S. history. He built the New Deal Coalition, which defined modern liberalism in the United States throughout the middle third of the 20th century. His third and fourth terms were dominated by World War II, which ended in victory shortly after he died in office. Born into the prominent Roosevelt family in Hyde Park, New York, he graduated from both Groton School and Harvard College, and attended Columbia Law S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winston Churchill
Sir Winston Leonard Spencer Churchill (30 November 187424 January 1965) was a British statesman, soldier, and writer who served as Prime Minister of the United Kingdom twice, from 1940 to 1945 Winston Churchill in the Second World War, during the Second World War, and again from 1951 to 1955. Apart from two years between 1922 and 1924, he was a Member of Parliament (United Kingdom), Member of Parliament (MP) from 1900 to 1964 and represented a total of five UK Parliament constituency, constituencies. Ideologically an Economic liberalism, economic liberal and British Empire, imperialist, he was for most of his career a member of the Conservative Party (UK), Conservative Party, which he led from 1940 to 1955. He was a member of the Liberal Party (UK), Liberal Party from 1904 to 1924. Of mixed English and American parentage, Churchill was born in Oxfordshire to Spencer family, a wealthy, aristocratic family. He joined the British Army in 1895 and saw action in British Raj, Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quebec Conference, 1943
The First Quebec Conference, codenamed "Quadrant", was a highly secret military conference held during World War II by the governments of the United Kingdom, Canada, and the United States. It took place in Quebec City on August 17–24, 1943, at both the Citadelle and the Château Frontenac. The chief representatives were Winston Churchill and Franklin D. Roosevelt, hosted by the Canadian prime minister William Lyon Mackenzie King. Conference Although Churchill suggested that Mackenzie King be involved in all discussions, Roosevelt vetoed the idea due to concern that future conferences would be encumbered by all of the Allied nations demanding seats. As a result, Mackenzie King's hospitality was almost purely for ceremonial purposes. Joseph Stalin, leader of the Soviet Union, had been invited to join the conference, but he did not attend for military reasons. The Allies agreed to begin discussions for the planning of the invasion of France, codenamed Operation Overlord, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chequers
Chequers ( ), or Chequers Court, is the country house of the Prime Minister of the United Kingdom. A 16th-century manor house in origin, it is located near the village of Ellesborough, halfway between Princes Risborough and Wendover in Buckinghamshire, United Kingdom, at the foot of the Chiltern Hills. It is about north-west of central London. Coombe Hill, once part of the estate, is located northeast. Chequers has been the country home of the serving Prime Minister since 1921 after the estate was given to the nation by Sir Arthur Lee by a Deed of Settlement, given full effect in the Chequers Estate Act 1917. The house is listed Grade I on the National Heritage List for England. Origin of the name The name "Chequers" may derive from an early owner of the manor of Ellesborough in the 12th century, Elias Ostiarius (or de Scaccario). The name "Ostiarius" meant an usher of the Court of the Exchequer and ''scacchiera'' means a chessboard in Italian. Elias Ostiarius's coa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City Of London
The City of London is a city, ceremonial county and local government district that contains the historic centre and constitutes, alongside Canary Wharf, the primary central business district (CBD) of London. It constituted most of London from its settlement by the Romans in the 1st century AD to the Middle Ages, but the modern area named London has since grown far beyond the City of London boundary. The City is now only a small part of the metropolis of Greater London, though it remains a notable part of central London. Administratively, the City of London is not one of the London boroughs, a status reserved for the other 32 districts (including Greater London's only other city, the City of Westminster). It is also a separate ceremonial county, being an enclave surrounded by Greater London, and is the smallest ceremonial county in the United Kingdom. The City of London is widely referred to simply as the City (differentiated from the phrase "the city of London" by capita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithfield, London
Smithfield, properly known as West Smithfield, is a district located in Central London, part of Farringdon Without, the most westerly ward of the City of London, England. Smithfield is home to a number of City institutions, such as St Bartholomew's Hospital and livery halls, including those of the Butchers' and Haberdashers' Companies. The area is best known for the Smithfield meat market, which dates from the 10th century, has been in continuous operation since medieval times, and is now London's only remaining wholesale market. Smithfield's principal street is called ''West Smithfield'', and the area also contains London's oldest surviving church, St Bartholomew-the-Great, founded in AD 1123. The area has borne witness to many executions of heretics and political rebels over the centuries, as well as Scottish knight Sir William Wallace, and Wat Tyler, leader of the Peasants' Revolt, among many other religious reformers and dissenters. Smithfield Market, a Grad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floating Island
A floating island is a mass of floating aquatic plants, mud, and peat ranging in thickness from several centimeters to a few meters. Floating islands are a common natural phenomenon that are found in many parts of the world. They exist less commonly as an artificial phenomenon. Floating islands are generally found on marshlands, lakes, and similar wetland locations, and can be many hectares in size. Natural occurrences Sometimes referred to as ''tussocks'', ''floatons'', or ''suds'', natural floating islands are composed of vegetation growing on a buoyant mat of plant roots or other organic detritus. In aquatic regions of Northwestern Europe several hundred hectares or thousand acres of floating meadows (German ''Schwingrasen'', Dutch ''trilveen'') have been preserved, which are partly used as agricultural land, partly as nature reserves. They typically occur when growths of cattails, bulrush, sedge, and reeds extend outward from the shoreline of a wetland area. As the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
