|
Stefan Janos (physicist)
Stefan Janos ( Slovak Štefan Jánoš, born 22 December 1943, Kuchyňa, Slovakia) is a Slovak-Swiss university physicist and professor, founder of very low temperature physics in Slovakia. Life Between 1950–1958 he attended the primary school in Suchohrad and Záhorská Ves and between 1958–1961 the high school in Malacky. Thereafter he studied at the Czech Technical University, Faculty of Technical and Nuclear Physics in Prague. In 1966 he graduated from university with diploma thesis “ Specific heat of Fe– Co alloys in the temperature range 1.4 to 4.2 K. He spent his one-year military service mainly at the Research and Test Centre of the Ministry of Defence in Brno. In August 1967 he joined the Faculty of Science at Pavol Jozef Šafárik University in Košice. There he started to build a new laboratory for very low temperature physics. Three years later he spent a study visit in Prof. Boris. N. Eselson laboratory in B Verkin Institute for Low Tem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuchyňa (okres Malacky)
Kuchyňa ( hu, Konyha, lit=Kitchen) is a municipality in the Malacky District in the Bratislava Region of western Slovakia close to the town of Malacky, north-west of Slovakia's capital Bratislava. Nearby castle ruins of Kuchyňa Castle bear the name of the municipality. The Kuchyňa airbase, often used by the US Air Force for training purposes, is located approximately 18 kilometers east of the city of Malacky. See also *Kuchyňa Castle Kuchyňa Castle was a castle in the Little Carpathians near the municipality Kuchyňa in the Bratislava region, Slovakia. Only modest remains of some parts of the castle are visible today. The ruins are located approximately 420 m above sea level. ... References External links Official page*https://web.archive.org/web/20070513023228/http://www.statistics.sk/mosmis/eng/run.html Villages and municipalities in Malacky District {{Bratislava-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Záhorská Ves
Záhorská Ves (previous name: ''Uhorská Ves''; german: Ungeraiden is a village situated north of Bratislava, the capital city of Slovakia. It is part of the Malacky District and Bratislava Region. The village is located on the Morava river, which forms the border between Slovakia and Austria. A river ferry operates between the village and Angern an der March in Austria Záhorská Ves is the westernmost settlement in Slovakia and is located near the westernmost point in Slovakia. Záhorská Ves has a population of 1,632 and area of 13.06 km2 at an altitude of 149 m. The settlement was first mentioned in 1557. Opera singer Lucia Popp Lucia Popp (born Lucia Poppová; 12 November 193916 November 1993) was a Slovak operatic soprano. She began her career as a soubrette, and later moved into the light-lyric and lyric coloratura soprano repertoire and then the lighter Richard S ... was born there in 1939. References External links Official website of Záhorská Ves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atom
Every atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and a number of neutrons. Only the most common variety of hydrogen has no neutrons. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across. They are so small that accurately predicting their behavior using classical physics, as if they were tennis balls for example, is not possible due to quantum effects. More than 99.94% of an atom's mass is in the nucleus. The protons have a positive electric charge, the electrons have a negative electric charge, and the neutrons have no electric charge. If the number of protons and electrons are equal, then the atom is electrically neutral. If an atom has more or fewer electrons than protons, then it has an overall negative or positive charge, respectively – such atoms are called ions. The electrons of an atom are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helium-3
Helium-3 (3He see also helion) is a light, stable isotope of helium with two protons and one neutron (the most common isotope, helium-4, having two protons and two neutrons in contrast). Other than protium (ordinary hydrogen), helium-3 is the only stable isotope of any element with more protons than neutrons. Helium-3 was discovered in 1939. Helium-3 occurs as a primordial nuclide, escaping from Earth's crust into its atmosphere and into outer space over millions of years. Helium-3 is also thought to be a natural nucleogenic and cosmogenic nuclide, one produced when lithium is bombarded by natural neutrons, which can be released by spontaneous fission and by nuclear reactions with cosmic rays. Some of the helium-3 found in the terrestrial atmosphere is also an artifact of atmospheric and underwater nuclear weapons testing. Much speculation has been made over the possibility of helium-3 as a future energy source. Unlike most nuclear fusion reactions, the fusion of helium-3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Academy Of Sciences Of Ukraine
The National Academy of Sciences of Ukraine (NASU; uk, Національна академія наук України, ''Natsional’na akademiya nauk Ukrayiny'', abbr: NAN Ukraine) is a self-governing state-funded organization in Ukraine that is the main center of development of science and technology by coordinating a system of research institutes in the country. It is the main research oriented organization along with the five other academies in Ukraine specialized in various scientific disciplines. NAS Ukraine consists of numerous departments, sections, research institutes, scientific centers and various other supporting scientific organizations. The Academy reports on the annual basis to the Cabinet of Ministers of Ukraine. The presidium of the academy is located at vulytsia Volodymyrska, 57, across the street from the Building of Pedagogical Museum, which was used to host the Central Council during the independence period of 1917-18. In 1919–1991 it was a repu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B Verkin Institute For Low Temperature Physics And Engineering
The B. Verkin Institute for Low Temperature Physics and Engineering ( uk, Фізико-технічний інститут низьких температур імені Б. І. Вєркіна) is a research institute that conducts basic research in experimental and theoretical physics, mathematics, as well as in the field of applied physics. It was founded in 1960 by Borys Verkin, Oleksandr Galkin, Borys. Eselson and Ihor Dmytrenko. The first director was Borys Verkin. Main areas of research are high-temperature superconductivity, weak superconductivity, magneto antiferromagnets, physics of low-dimensional systems, point-contact spectroscopy, quantum crystals, nonlinear phenomena in metals, physics of disordered systems, quantum phenomena in plasticity and others. The institute has published about 250 monographs, textbooks, reference books, more than 12,000 articles and reviews in ranking scientific journals, and has trained more than 850 highly qualified experts — PhDs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boris
Boris may refer to: People * Boris (given name), a male given name *:''See'': List of people with given name Boris * Boris (surname) * Boris I of Bulgaria (died 907), the first Christian ruler of the First Bulgarian Empire, canonized after his death * Boris II of Bulgaria (c. 931–977), ruler of the First Bulgarian Empire * Boris III of Bulgaria (1894–1943), ruler of the Kingdom of Bulgaria in the first half of the 20th century * Boris, Prince of Tarnovo (born 1997), Spanish-born Bulgarian royal * Boris and Gleb (died 1015), the first saints canonized in Kievan Rus * Boris (singer) (born 1965), pseudonym of French singer Philippe Dhondt Arts and media * Boris (band), a Japanese experimental rock trio * ''Boris'' (EP), by Yezda Urfa, 1975 * "Boris" (song), by the Melvins, 1991 * ''Boris'' (TV series), a 2007–2009 Italian comedy series * '' Boris: The Film'', a 2011 Italian film based on the TV series * '' Boris: The Rise of Boris Johnson'', a 2006 biography by Andrew G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelvin
The kelvin, symbol K, is the primary unit of temperature in the International System of Units (SI), used alongside its prefixed forms and the degree Celsius. It is named after the Belfast-born and University of Glasgow-based engineer and physicist William Thomson, 1st Baron Kelvin (1824–1907). The Kelvin scale is an absolute thermodynamic temperature scale, meaning it uses absolute zero as its null (zero) point. Historically, the Kelvin scale was developed by shifting the starting point of the much-older Celsius scale down from the melting point of water to absolute zero, and its increments still closely approximate the historic definition of a degree Celsius, but since 2019 the scale has been defined by fixing the Boltzmann constant to be exactly . Hence, one kelvin is equal to a change in the thermodynamic temperature that results in a change of thermal energy by . The temperature in degree Celsius is now defined as the temperature in kelvins minus 273.15, meaning t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alloy
An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity, ductility, opacity (optics), opacity, and lustre (mineralogy), luster, but may have properties that differ from those of the pure metals, such as increased strength or hardness. In some cases, an alloy may reduce the overall cost of the material while preserving important properties. In other cases, the mixture imparts synergistic properties to the constituent metal elements such as corrosion resistance or mechanical strength. Alloys are defined by a metallic bonding character. The alloy constituents are usually measured by mass percentage for practical applications, and in Atomic ratio, atomic fraction for basic science studies. Alloys are usually classified as substitutional or interstitial alloys, depending on the atomic arrangement that forms the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cobalt
Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Cobalt-based blue pigments ( cobalt blue) have been used since ancient times for jewelry and paints, and to impart a distinctive blue tint to glass, but the color was for a long time thought to be due to the known metal bismuth. Miners had long used the name ''kobold ore'' (German for ''goblin ore'') for some of the blue-pigment-producing minerals; they were so named because they were poor in known metals, and gave poisonous arsenic-containing fumes when smelted. In 1735, such ores were found to be reducible to a new metal (the first discovered since ancient times), and this was ultimately named for the ''kobold''. Today, some cobalt is produced specifically from one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron
Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. In its metallic state, iron is rare in the Earth's crust, limited mainly to deposition by meteorites. Iron ores, by contrast, are among the most abundant in the Earth's crust, although extracting usable metal from them requires kilns or furnaces capable of reaching or higher, about higher than that required to smelt copper. Humans started to master that process in Eurasia during the 2nd millennium BCE and the use of iron tools and weapons began to displace copper alloys, in some regions, only around 1200 BCE. That event is considered the transition from the Bronze Age to the Iron A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Heat
In thermodynamics, the specific heat capacity (symbol ) of a substance is the heat capacity of a sample of the substance divided by the mass of the sample, also sometimes referred to as massic heat capacity. Informally, it is the amount of heat that must be added to one unit of mass of the substance in order to cause an increase of one unit in temperature. The SI unit of specific heat capacity is joule per kelvin per kilogram, J⋅kg−1⋅K−1. For example, the heat required to raise the temperature of of water by is , so the specific heat capacity of water is . Specific heat capacity often varies with temperature, and is different for each state of matter. Liquid water has one of the highest specific heat capacities among common substances, about at 20 °C; but that of ice, just below 0 °C, is only . The specific heat capacities of iron, granite, and hydrogen gas are about 449 J⋅kg−1⋅K−1, 790 J⋅kg−1⋅K−1, and 14300 J⋅kg−1⋅K−1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_0.002_K_region.png "Click for more on -> Helium-3")
