|
Pauls Stradiņš Jr
Pauls Stradiņš Jr. (born 1963) is a physicist at the National Renewable Energy Laboratory in Golden, Colorado, and a foreign member of the Latvian Academy of Sciences. Currently he is the principal scientist and a project leader of the silicon photovoltaics group at NREL. He leads a team that recently theorized that defects in photovoltaic cells could actually improve the performance of those cells. He is the grandson of Pauls Stradiņš (17 January 1896 – 14 August 1958), a Latvian professor and physician. See also * National Renewable Energy Laboratory References External links * {{DEFAULTSORT:Stradiņš, Pauls, Jr 1963 births Living people American people of Latvian descent Silicon photonics 21st-century American physicists Latvian physicists Latvian inventors Moscow Institute of Physics and Technology alumni 21st-century American inventors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid (sometimes considered a non-metal) and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive. Silicon is a significant element that is essential for several physiological and metabolic processes in plants. Silicon is widely regarded as the predominant semiconductor material due to its versatile applications in various electrical devices such as transistors, solar cells, integrated circuits, and others. These may be due to its significant band gap, expansive optical transmission range, extensive absorption spectrum, surface roughening, and effective anti-reflection coating. Because of its high chemical affinity for oxygen, it was not until 1823 that Jöns Jakob Berzelius was first able to p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1963 Births
Events January * January 1 – Bogle–Chandler case: Commonwealth Scientific and Industrial Research Organisation scientist Dr. Gilbert Bogle and Mrs. Margaret Chandler are found dead (presumed poisoned), in bushland near the Lane Cove River, Sydney, Australia. * January 2 – Vietnam War – Battle of Ap Bac: The Viet Cong win their first major victory. * January 9 – A January 1963 lunar eclipse, total penumbral lunar eclipse is visible in the Americas, Europe, Africa and Asia, and is the 56th lunar eclipse of Lunar Saros 114. Gamma has a value of −1.01282. It occurs on the night between Wednesday, January 9 and Thursday, January 10, 1963. * January 13 – 1963 Togolese coup d'état: A military coup in Togo results in the installation of coup leader Emmanuel Bodjollé as president. * January 17 – A last quarter moon occurs between the January 1963 lunar eclipse, penumbral lunar eclipse and the Solar eclipse of January 25, 1963, annular solar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latvian Inventors
Latvian may refer to: *Something of, from, or related to Latvia **Latvians, a Baltic ethnic group, native to what is modern-day Latvia and the immediate geographical region **Latvian language, also referred to as Lettish **Latvian cuisine **Latvian culture **Latvian horse *Latvian Gambit, an opening in chess See also *Latvia (other) Latvia is a country in Europe. Latvia can also refer to: * Latvian Soviet Socialist Republic (1940–1990) * Latvia (European Parliament constituency) * 1284 Latvia - asteroid * Latvia Peak - mountain in Tajikistan Tajikistan, officially the ... * {{disambiguation Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
21st-century American Physicists
File:1st century collage.png, From top left, clockwise: Jesus is crucified by Roman authorities in Judaea (17th century painting). Four different men ( Galba, Otho, Vitellius, and Vespasian) claim the title of Emperor within the span of a year; The Great Fire of Rome (18th-century painting) sees the destruction of two-thirds of the city, precipitating the empire's first persecution against Christians, who are blamed for the disaster; The Roman Colosseum is built and holds its inaugural games; Roman forces besiege Jerusalem during the First Jewish–Roman War (19th-century painting); The Trưng sisters lead a rebellion against the Chinese Han dynasty (anachronistic depiction); Boudica, queen of the British Iceni leads a rebellion against Rome (19th-century statue); Knife-shaped coin of the Xin dynasty., 335px rect 30 30 737 1077 Crucifixion of Jesus rect 767 30 1815 1077 Year of the Four Emperors rect 1846 30 3223 1077 Great Fire of Rome rect 30 1108 1106 2155 Boudi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon Photonics
Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI). Silicon photonic devices can be made using existing semiconductor fabrication techniques, and because silicon is already used as the substrate for most integrated circuits, it is possible to create hybrid devices in which the optical and electronic components are integrated onto a single microchip. Consequently, silicon photonics is being actively researched by many electronics manufacturers including IBM and Intel, as well as by academic research groups, as a means for keeping on tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American People Of Latvian Descent
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label that was previously known as Def American * American University, in Washington, D.C. Sports teams S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Purpose: Because living persons may suffer personal harm from inappropriate information, we should watch their articles carefully. By adding an article to this category, it marks them with a notice about sources whenever someone tries to edit them, to remind them of WP:BLP (biographies of living persons) policy that these articles must maintain a neutral point of view, maintain factual accuracy, and be properly sourced. Recent changes to these articles are listed on Special:RecentChangesLinked/Living people. Organization: This category should not be sub-categorized. Entries are generally sorted by family name In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give .... Maintenance: Individuals of advanced age (over 90), for whom there has been no new documentation in the last ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pauls Stradiņš Clinical University Hospital
Pauls Stradiņš Clinical University Hospital () is an outpatient and hospital health care service provider in Riga, Latvia. This hospital also plays a role in medical science and medical education. It aims to become a science and a training center to residents and prospective doctors and currently is affiliated with two universities (University of Latvia and Riga Stradiņš University). It is named after Pauls Stradiņš. History Latvia's largest and most important hospital has changed its name eight times since 1910. It was called 2nd Riga City Hospital from 1910 until 1940, and has been the main teaching hospital of the University of Latvia since 1928. During the Soviet occupation in 1940–1941, it was called the National Clinical Hospital, and then during the German occupation until 1944 it was called Riga Hospital. From 1944 until 1948, it was called the National Clinical Hospital, then renamed the Republican Clinical Hospital until 1958 when the name was again changed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photovoltaics
Photovoltaics (PV) is the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry. The photovoltaic effect is commercially used for electricity generation and as photosensors. A photovoltaic system employs solar modules, each comprising a number of solar cells, which generate electrical power. PV installations may be ground-mounted, rooftop-mounted, wall-mounted or floating. The mount may be fixed or use a solar tracker to follow the sun across the sky. Photovoltaic technology helps to mitigate climate change because it emits much less carbon dioxide than fossil fuels. Solar PV has specific advantages as an energy source: once installed, its operation does not generate any pollution or any greenhouse gas emissions; it shows scalability in respect of power needs and silicon has large availability in the Earth's crust, although other materials required ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latvia
Latvia, officially the Republic of Latvia, is a country in the Baltic region of Northern Europe. It is one of the three Baltic states, along with Estonia to the north and Lithuania to the south. It borders Russia to the east and Belarus to the southeast, and shares a Maritime boundary, maritime border with Sweden to the west. Latvia covers an area of , with a population of 1.9million. The country has a Temperate climate, temperate seasonal climate. Its capital and List of cities and towns in Latvia, largest city is Riga. Latvians, who are the titular nation and comprise 65.5% of the country's population, belong to the ethnolinguistic group of the Balts and speak Latvian language, Latvian. Russians in Latvia, Russians are the most prominent minority in the country, at almost a quarter of the population; 37.7% of the population speak Russian language, Russian as their native tongue. After centuries of State of the Teutonic Order, Teutonic, Swedish Livonia, Swedish, Inflanty Voi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pauls Stradiņš
Pauls Stradiņš (17 January 1896 – 14 August 1958) was a Latvian professor, physician, and surgeon who founded the Museum of the History of Medicine in Riga. Early life Stradiņš was born in Eķengrāve () (now Viesīte, Jēkabpils Municipality) as the son of a craftsman and pub owner. He graduated from the Riga Alexander Gymnasium in 1914 and entered the S.M. Kirov Military Medical Academy, S. M. Kirov Military Medical Academy in Petrograd (now Saint Petersburg), where his professors included the Nobel Prize-winning physiologist Ivan Pavlov. Medical education During World War I, Stradiņš was an army doctor on the Western Front (Russian Empire), Russian Western Front and in Persia, and then the chief of a surgical department in Vladivostok. After graduating from the military medical academy in 1919, he became an institute doctor (i.e., a candidate for an Doctor of Medicine, M.D. degree) in the academy's hospital surgery clinic, headed by Professor Sergei Fyodorov (s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
