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List Of Spanish Inventors And Discoverers
This is a list of inventors and discoverers who are of Spaniards, Spanish origin or otherwise reside in Spain, continental Spain or one of the Nationalities and regions of Spain, country's oversees territories. A *José de Acosta, José de Acosta (1540–1600), one of the first natural history, naturalists and anthropology, anthropologists of the Americas. *Andrés Alcázar (1490-1585), neurosurgeon and anatomist, designed new tools for surgical treatments. *José María Algué, José María Algué (1856–1930), meteorologist, inventor of the barocyclometer, the nephoscope, and the microseismograph. *José Antonio de Artigas Sanz, José Antonio de Artigas Sanz (b. 1887), created luminescence with noble gases. *Jerónimo de Ayanz y Beaumont, Jerónimo de Ayanz y Beaumont (1553–1613), registered a design for a steam-powered water pump for use in mines. *:es:José Luis Ayuso Fernández, José Luis Ayuso Fernández (1897-1992), inventor, engineer, mechanic, electrician and cinemato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microkeratome
A microkeratome is a precision surgical instrument with an oscillating blade designed for creating the corneal flap in LASIK or ALK surgery. The normal human cornea varies from around 500 to 600 micrometres in thickness; and in the LASIK procedure, the microkeratome creates an 83 to 200 micrometre thick flap. This piece of equipment is used all around the world to cut the cornea flap. The microkeratome is also used in Descemet's stripping automated endothelial keratoplasty (DSAEK), where it is used to slice a thin layer from the back of the donor cornea, which is then transplanted into the posterior cornea of the recipient. It was invented by Jose Barraquer and Cesar Carlos Carriazo in the 1950s in Colombia. See also *Instruments used in general surgery There are many different surgical specialties, some of which require very specific kinds of surgical instruments to perform. General surgery is a specialty focused on the abdominal contents, as well as the thyroid gland, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manuel Cardona
Manuel Cardona Castro (7 September 1934 – 2 July 2014) was a condensed matter physicist. According to the ISI Citations web database, Cardona was one of the eight most cited physicists since 1970. He specialized in solid state physics. Cardona's main interests were in the fields of: Raman scattering (and other optical spectroscopies) as applied to semiconductor microstructures, materials with tailor-made isotopic compositions, and high ''T''c superconductors, particularly investigations of electronic and vibronic excitations in the normal and superconducting state. Academic career Cardona was born in Barcelona, Spain in 1934. After obtaining a Masters in physics in 1955 from University of Barcelona Cardona was awarded a fellowship to work as a graduate student at Harvard University starting in 1956. At Harvard he began investigations of the dielectric properties of semiconductors, in particular germanium and silicon. With this work as a thesis he received a PhD in Applied ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiotherapy
Radiation therapy or radiotherapy, often abbreviated RT, RTx, or XRT, is a therapy using ionizing radiation, generally provided as part of cancer treatment to control or kill malignant cells and normally delivered by a linear accelerator. Radiation therapy may be curative in a number of types of cancer if they are localized to one area of the body. It may also be used as part of adjuvant therapy, to prevent tumor recurrence after surgery to remove a primary malignant tumor (for example, early stages of breast cancer). Radiation therapy is synergistic with chemotherapy, and has been used before, during, and after chemotherapy in susceptible cancers. The subspecialty of oncology concerned with radiotherapy is called radiation oncology. A physician who practices in this subspecialty is a radiation oncologist. Radiation therapy is commonly applied to the cancerous tumor because of its ability to control cell growth. Ionizing radiation works by damaging the DNA of cancerous tissue l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiology
Radiology ( ) is the medical discipline that uses medical imaging to diagnose diseases and guide their treatment, within the bodies of humans and other animals. It began with radiography (which is why its name has a root referring to radiation), but today it includes all imaging modalities, including those that use no electromagnetic radiation (such as ultrasonography and magnetic resonance imaging), as well as others that do, such as computed tomography (CT), fluoroscopy, and nuclear medicine including positron emission tomography (PET). Interventional radiology is the performance of usually minimally invasive medical procedures with the guidance of imaging technologies such as those mentioned above. The modern practice of radiology involves several different healthcare professions working as a team. The radiologist is a medical doctor who has completed the appropriate post-graduate training and interprets medical images, communicates these findings to other physicians ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celedonio Calatayud
Celedonio Calatayud Costa (; October 29, 1880 in Pedreguer – January 24, 1931 in Madrid) was a Spanish scientist and radiologist, remembered for his achievements on radiology, radiotherapy, and electrology. He pioneered the use of radiology and electrology in Europe for both diagnostics and therapeutical purposes, introducing radiotherapy in Spain in 1906. He founded the Spanish Medical Electrology and Radiology Society (Sociedad Española de Radiología y Electrología Médicas), promoted the doctoral chair of Electro-radiology and was elected as the first professor to chair it at the Universidad Central (later renamed Complutense University of Madrid). He also was the driving force behind and creator of the First National Medical Congress that took place in Madrid in 1919, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metals
A metal (from Greek μέταλλον ''métallon'', "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically ductile (can be drawn into wires) and malleable (they can be hammered into thin sheets). These properties are the result of the ''metallic bond'' between the atoms or molecules of the metal. A metal may be a chemical element such as iron; an alloy such as stainless steel; or a molecular compound such as polymeric sulfur nitride. In physics, a metal is generally regarded as any substance capable of conducting electricity at a temperature of absolute zero. Many elements and compounds that are not normally classified as metals become metallic under high pressures. For example, the nonmetal iodine gradually becomes a metal at a pressure of between 40 and 170 thousand times atmospheric pressure. Equally, some materials regarded as metals c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxidisation
Redox (reduction–oxidation, , ) is a type of chemical reaction in which the oxidation states of substrate change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a decrease in the oxidation state. There are two classes of redox reactions: * ''Electron-transfer'' – Only one (usually) electron flows from the reducing agent to the oxidant. This type of redox reaction is often discussed in terms of redox couples and electrode potentials. * ''Atom transfer'' – An atom transfers from one substrate to another. For example, in the rusting of iron, the oxidation state of iron atoms increases as the iron converts to an oxide, and simultaneously the oxidation state of oxygen decreases as it accepts electrons released by the iron. Although oxidation reactions are commonly associated with the formation of oxides, other chemical species can serve the same function. In hydrogenation, C=C (and other) bonds ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word ''crystal'' derives from the Ancient Greek word (), meaning both "ice" and "rock crystal", from (), "icy cold, frost". Examples of large crystals include snowflakes, diamonds, and table salt. Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. Polycrystals include most metals, rocks, ceramics, and ice. A third category of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicolás Cabrera
Nicolás Cabrera (1913–1989), was a Spanish physicist who did important work on the theories of crystal growth (specifically the Burton–Cabrera–Frank theory) and the oxidisation of metals. He was the son of another famous Spanish physicist Blas Cabrera and the father of American Physicist Blas Cabrera Navarro. He spent many years in exile during the Francoist State. He was Professor of the Department of physics in the University of Virginia, where he worked from 1952. He became known for his interests in engineering and material science. He founded the physics department and was a professor at the Autonomous University of Madrid (UAM), from 1971. He is considered to have given an impulse to the study of physics in Spain from the time of his return. For a time Javier Solana Francisco Javier Solana de Madariaga (; born 14 July 1942) is a Spanish physicist and PSOE politician. After serving in the Spanish government as Foreign Affairs Minister under Felipe González ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angel Cabrera (naturalist)
In various theistic religious traditions an angel is a supernatural spiritual being who serves God. Abrahamic religions often depict angels as wikt:benevolent, benevolent celestial intermediaries between God (or Heaven) and humanity. Other roles include protectors and guides for humans, and servants of God. Abrahamic religions describe angelic Hierarchy of angels, hierarchies, which vary by religion and sect. Some angels have specific names (such as Gabriel or Michael (archangel), Michael) or titles (such as seraph or archangel). Those expelled from Heaven are called fallen angels, distinct from the heavenly host. Angels in art are usually shaped like humans of extraordinary beauty. They are often identified in Christian artwork with Bird flight, bird wings, Halo (religious iconography), halos, and divine light. Etymology The word ''angel'' arrives in modern English from Old English ''engel'' (with a hard ''g'') and the Old French ''angele''. Both of these derive from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pitcairn Autogiro NASA GPN-2000-001990
The Pitcairn Islands (; Pitkern: '), officially the Pitcairn, Henderson, Ducie and Oeno Islands, is a group of four volcanic islands in the southern Pacific Ocean that form the sole British Overseas Territory in the Pacific Ocean. The four islands—Pitcairn, Henderson, Ducie and Oeno—are scattered across several hundred miles of ocean and have a combined land area of about . Henderson Island accounts for 86% of the land area, but only Pitcairn Island is inhabited. The islands nearest to the Pitcairn Islands are Mangareva (of French Polynesia) at 688 km to the west and Easter Island at 1,929 km to the east. The Pitcairn Islanders are a biracial ethnic group descended mostly from nine ''Bounty'' mutineers and a handful of Tahitian consorts—as is still apparent from the surnames of many of the islanders. The mutiny and its aftermath have been the subject of many books and films. As of January 2020, the territory had only 47 permanent inhabitants. History Polynesi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
