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Glass Disease
Glass disease, also referred to as sick glass or glass illness, is a degradation process of glass that can result in weeping, crizzling, spalling, cracking and fragmentation. Glass disease is caused by an inherent instability in the chemical composition of the original glass formula. Properties of a particular glass will vary with the type and proportions of silica, alkali and alkaline earth in its composition. Once damage has occurred it is irreversible, but decay processes can be slowed by climate control to regulate surrounding temperature, humidity, and air flow. Chemical composition and decay Glass disease is caused by an inherent fault in the chemical composition of the original glass formula. Glass contains three types of components: ''network formers'' establish basic structure, ''network stabilizers'' make glass strong and water resistant, and ''flux'' lowers the melting point at which the glass can be formed. Common formulations of glass may include silica (SiO2) as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Glass Round Bottom Vase 01
Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of Roman civilization *Epistle to the Romans, shortened to Romans, a letter written by Paul, found in the New Testament of the Christian Bible * Ar-Rum (), the 30th sura of the Quran. Roman or Romans may also refer to: Arts and entertainment Music *Romans (band), a Japanese pop group * ''Roman'' (album), by Sound Horizon, 2006 * ''Roman'' (EP), by Teen Top, 2011 *"Roman (My Dear Boy)", a 2004 single by Morning Musume Film and television *Film Roman, an American animation studio * ''Roman'' (film), a 2006 American suspense-horror film * ''Romans'' (2013 film), an Indian Malayalam comedy film * ''Romans'' (2017 film), a British drama film * ''The Romans'' (''Doctor Who''), a serial in British TV series People *Roman (given name), a given name, including a list of people and fictional characters *Roman (surname), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Ion Mass Spectrometry
Secondary-ion mass spectrometry (SIMS) is a technique used to analyze the composition of solid surfaces and thin films by sputtering the surface of the specimen with a focused primary ion beam and collecting and analyzing ejected secondary ions. The mass/charge ratios of these secondary ions are measured with a mass spectrometer to determine the elemental, isotopic, or molecular composition of the surface to a depth of 1 to 2 nm. Due to the large variation in ionization probabilities among elements sputtered from different materials, comparison against well-calibrated standards is necessary to achieve accurate quantitative results. SIMS is the most sensitive surface analysis technique, with elemental detection limits ranging from parts per million to parts per billion. History In 1910, British physicist J. J. Thomson observed a release of positive ions and neutral atoms from a solid surface induced by ion bombardment. Improved vacuum pump technology in the 1940s enabled th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass Art
Glass art refers to individual works of art that are substantially or wholly made of glass. It ranges in size from monumental works and installation pieces to wall hangings and windows, to works of art made in studios and factories, including glass jewelry and tableware. As a decorative and functional medium, glass was extensively developed in Ancient Egypt, Egypt and Assyria. Glassblowing was perhaps invented in the 1st century BC, and featured heavily in Roman glass, which was highly developed with forms such as the cage cup for a luxury market. Islamic glass was the most sophisticated of the early Middle Ages. Then the builders of the great Norman architecture, Norman and Gothic architecture, Gothic cathedrals of Europe took the art of glass to new heights with the use of stained glass windows as a major architectural and decorative element. Glass from Murano, in the Venetian Lagoon, (also known as Venetian glass) is the result of hundreds of years of refinement and inventi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conservation And Restoration Of Cultural Heritage
conservation and restoration of cultural property focuses on protection and care of cultural property (tangible cultural heritage), including artworks, architecture, archaeology, and museum collections. Conservation activities include preventive conservation, examination, documentation, research, treatment, and education. This field is closely allied with conservation science, curators and registrars. Definition Conservation of cultural property involves protection and restoration using "any methods that prove effective in keeping that property in as close to its original condition as possible for as long as possible." Conservation of cultural heritage is often associated with art collections and museums and involves collection care and management through tracking, examination, documentation, exhibition, storage, preventive conservation, and restoration. The scope has widened from art conservation, involving protection and care of artwork and architecture, to conservat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shamanism
Shamanism is a spiritual practice that involves a practitioner (shaman) interacting with the spirit world through altered states of consciousness, such as trance. The goal of this is usually to direct spirits or spiritual energies into the physical world for the purpose of healing, divination, or to aid human beings in some other way. Beliefs and practices categorized as shamanic have attracted the interest of scholars from a variety of disciplines, including anthropologists, archeologists, historians, religious studies scholars, philosophers, and psychologists. Hundreds of books and academic papers on the subject have been produced, with a peer-reviewed academic journal being devoted to the study of shamanism. Terminology Etymology The Modern English word ''shamanism'' derives from the Russian word , , which itself comes from the word from a Tungusic language – possibly from the southwestern dialect of the Evenki spoken by the Sym Evenki peoples, or from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siberia
Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states since the lengthy conquest of Siberia, which began with the fall of the Khanate of Sibir in 1582 and concluded with the annexation of Chukotka in 1778. Siberia is vast and sparsely populated, covering an area of over , but home to roughly a quarter of Russia's population. Novosibirsk, Krasnoyarsk, and Omsk are the largest cities in the area. Because Siberia is a geographic and historic concept and not a political entity, there is no single precise definition of its territorial borders. Traditionally, Siberia spans the entire expanse of land from the Ural Mountains to the Pacific Ocean, with the Ural River usually forming the southernmost portion of its western boundary, and includes most of the drainage basin of the Arctic Ocean. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corning Museum Of Glass
The Corning Museum of Glass is a museum in Corning (city), New York, Corning, New York, United States, dedicated to the art, history, and science of glass. It was founded in 1951 by Corning Incorporated, Corning Glass Works and currently has a collection of more than 50,000 glass objects, some over 3,500 years old. History The Corning Museum of Glass (CMOG) is a not-for-profit museum dedicated to glass, first created as the Corning Glass Center, in 1951. It was built by Corning Glass Works (renamed Corning Incorporated in 1989) upon the company's 100th anniversary. Thomas S. Buechner, who would later become director of the Brooklyn Museum, was the founding director of the glass museum, serving in the post from 1951 to 1960 and again from 1973 to 1980. Growth and renovations The original museum and library were housed in a building designed by Harrison & Abramovitz in 1951. Gunnar Birkerts designed a new addition, which was opened on May 28, 1980. The Studio opened for cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethanol
Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula . It is an Alcohol (chemistry), alcohol, with its formula also written as , or EtOH, where Et is the pseudoelement symbol for ethyl group, ethyl. Ethanol is a Volatility (chemistry), volatile, flammable, colorless liquid with a characteristic wine-like odor and pungent taste. As a psychoactive depressant, it is the active ingredient in alcoholic beverages, and the second most consumed drug globally behind caffeine. Ethanol is naturally produced by the fermentation process of sugars by yeasts or via petrochemical processes such as ethylene hydration. Historically it was used as a general anesthetic, and has modern medical applications as an antiseptic, disinfectant, solvent for some medications, and antidote for methanol poisoning and ethylene glycol poisoning. It is used as a chemical solvent and in the Chemical synthesis, synthesis of orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass Beads
Glass bead making has long traditions, with the oldest known beads dating over 3,000 years. People have been making beads out of glass since at least Ancient Roman times. Perhaps the earliest glass-like beads were Egyptian faience beads, a form of clay bead with a self-forming vitreous coating. Glass beads are significant in archaeology because the presence of glass beads often indicates that there was trade and that the bead making technology was being spread. In addition, the composition of the glass beads could be analyzed and help archaeologists understand the sources of the beads. Common types of glass bead manufacture Glass beads are usually categorized by the method used to manipulate the glass: wound beads, drawn beads, and molded beads. There are composites, such as millefiori beads, where cross-sections of a drawn glass cane are applied to a wound glass core. A very minor industry in blown glass beads also existed in 19th-century Venice and France. Wound glass be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Museum Of The American Indian
The National Museum of the American Indian is a museum in the United States devoted to the culture of the Indigenous peoples of the Americas. It is part of the Smithsonian Institution group of museums and research centers. The museum has three facilities. The National Museum of the American Indian on the National Mall in Washington, D.C., opened on September 21, 2004, on Fourth Street and Independence Avenue, Southwest. The George Gustav Heye Center, a permanent museum, is located at the Alexander Hamilton U.S. Custom House in New York City, opened in October 1994. The Cultural Resources Center, a research and collections facility, is located in Suitland, Maryland. The foundations for the present collections were first assembled in the former Museum of the American Indian in New York City, which was established in 1916, and which became part of the Smithsonian in 1989. History Fundraising and advocacy for the creation of what would eventually become the National Museum of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ettore Sottsass
Ettore Sottsass (; 14 September 1917 – 31 December 2007) was an Italian architect and product designer. He was known for his designs of furniture, jewelry, glass, lighting, homeware and office supplies. He also worked on numerous buildings and interiors, often defined by bold colours. Early life Sottsass was born in Innsbruck, Austria, and grew up in Turin, where his father, also named Ettore Sottsass, was an architect. His father belonged to the modernist architecture group Movimento Italiano per l'Architettura Razionale (MIAR), which was led by Giuseppe Pagano. Sottsass attended Politecnico di Torino in Turin and graduated in 1939 with a degree in architecture. After the invasion of Italy by the Anglo-Americans, Sottsass joined the Italian Republican Fascist Party and he enlisted in the Monterosa Division of the Repubblica Sociale Italiana which was led by Benito Mussolini, to fight in the mountains alongside Hitler's army (Sottsass tells his adventures as a Lieutenan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria And Albert Museum
The Victoria and Albert Museum (abbreviated V&A) in London is the world's largest museum of applied arts, decorative arts and design, housing a permanent collection of over 2.8 million objects. It was founded in 1852 and named after Queen Victoria and Albert, Prince Consort, Prince Albert. The V&A is in the Royal Borough of Kensington and Chelsea, in an area known as "Albertopolis" because of its association with Prince Albert, the Albert Memorial, and the major cultural institutions with which he was associated. These include the Natural History Museum, London, Natural History Museum, the Science Museum (London), Science Museum, the Royal Albert Hall and Imperial College London. The museum is a non-departmental public body sponsored by the Department for Digital, Culture, Media and Sport. As with other national British museums, entrance is free. The V&A covers and 145 galleries. Its collection spans 5,000 years of art, from ancient history to the present day, from the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
