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Olexander Smakula
Alexander Smakula () (1900 in Dobrovody, Austria-Hungary, today Ukraine – 17 May 1983 in Auburn, Massachusetts, USA) was a Ukrainian physicist known for the invention of anti-reflective lens coatings based on optical interference. Biography Smakula was born to a peasant family in Dobrovody village, Austria-Hungary (today Ternopil Oblast, Ukraine). After finishing his studies at the Ternopil gymnasium he applied to the University of Göttingen from which he graduated in 1927. Afterwards he worked as an assistant of Prof. Robert Pohl. After his short stay at Odessa University, Smakula returned to Germany as head of an optics laboratory in Heidelberg. From 1934 he worked at the Carl Zeiss AG company in Jena. While at Zeiss, in 1935, Smakula invented and patented interference-based optical anti-reflective coatings, a significant advance in optical technology. The patent mentions practically almost no light absorbing organic and inorganic materials can be used for such coatings ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dobrovody, Ternopil Raion, Ternopil Oblast
Dobrovody () is a village in the Zbarazh urban hromada of the Ternopil Raion of Ternopil Oblast in Ukraine. History The first written mention of the village was in 1463. After the liquidation of the Zbarazh Raion on 19 July 2020, the village became part of the Ternopil Raion.Постанова Верховної Ради України від 17 липня 2020 року № 807-IXПро утворення та ліквідацію районів Religion * Saint Paraskeva church (1794, brick). Notable residents * Olexander Smakula, Oleksander Smakula (1900–1983), Ukrainian physicist known for the invention of anti-reflective coating, anti-reflective lens coatings based on optical interference * Andriy Pyshnyi, Andrii Pyshnyi (born 1974), Ukrainian banker and politician The village was visited by writers Ivan Drach, Roman Ivanychuk, Dmytro Pavlychko, and Borys Kharchuk. References Sources * * * ''Назар М''. Добриводи: історичний нарис. � ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Interference
In physics, interference is a phenomenon in which two coherent waves are combined by adding their intensities or displacements with due consideration for their phase difference. The resultant wave may have greater amplitude (constructive interference) or lower amplitude (destructive interference) if the two waves are in phase or out of phase, respectively. Interference effects can be observed with all types of waves, for example, light, radio, acoustic, surface water waves, gravity waves, or matter waves as well as in loudspeakers as electrical waves. Etymology The word ''interference'' is derived from the Latin words ''inter'' which means "between" and ''fere'' which means "hit or strike", and was used in the context of wave superposition by Thomas Young in 1801. Mechanisms The principle of superposition of waves states that when two or more propagating waves of the same type are incident on the same point, the resultant amplitude at that point is equal to the ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts Institute Of Technology Faculty
Massachusetts ( ; ), officially the Commonwealth of Massachusetts, is a U.S. state, state in the New England region of the Northeastern United States. It borders the Atlantic Ocean and the Gulf of Maine to its east, Connecticut and Rhode Island to its south, New Hampshire and Vermont to its north, and New York (state), New York to its west. Massachusetts is the List of U.S. states and territories by area, sixth-smallest state by land area. With a 2024 U.S. Census Bureau-estimated population of 7,136,171, its highest estimated count ever, Massachusetts is the most populous state in New England, the List of U.S. states and territories by population, 16th-most-populous in the United States, and the List of states and territories of the United States by population density, third-most densely populated U.S. state, after New Jersey and Rhode Island. Massachusetts was a site of early British colonization of the Americas, English colonization. The Plymouth Colony was founded in 16 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Göttingen Alumni
A university () is an educational institution, institution of tertiary education and research which awards academic degrees in several Discipline (academia), academic disciplines. ''University'' is derived from the Latin phrase , which roughly means "community of teachers and scholars". Universities typically offer both undergraduate education, undergraduate and postgraduate education, postgraduate programs. The first universities in Europe were established by Catholic Church, Catholic monks. The University of Bologna (), Italy, which was founded in 1088, is the first university in the sense of: *being a high degree-awarding institute. *using the word (which was coined at its foundation). *having independence from the ecclesiastic schools and issuing secular as well as non-secular degrees (with teaching conducted by both clergy and non-clergy): grammar, rhetoric, logic, theology, canon law and notarial law.Hunt Janin: "The university in medieval life, 1179–1499", McFarland, 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1983 Deaths
1983 saw both the official beginning of the Internet and the first mobile cellular telephone call. Events January * January 1 – The migration of the ARPANET to Internet protocol suite, TCP/IP is officially completed (this is considered to be the beginning of the true Internet). * January 6 – Pope John Paul II appoints a bishop over the Czechoslovak exile community, which the ''Rudé právo'' newspaper calls a "provocation." This begins a year-long disagreement between the Czechoslovak Socialist Republic and the Vatican City, Vatican, leading to the eventual restoration of diplomatic relations between the two states. * January 14 – The head of Bangladesh's military dictatorship, Hussain Muhammad Ershad, announces his intentions to "turn Bangladesh into an Islamic state." * January 18 – United States Secretary of the Interior, U.S. Secretary of the Interior James G. Watt makes controversial remarks blaming poor living conditions on Indian reservation, Native American re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1900 Births
As of March 1 ( O.S. February 17), when the Julian calendar acknowledged a leap day and the Gregorian calendar did not, the Julian calendar fell one day further behind, bringing the difference to 13 days until February 28 ( O.S. February 15), 2100. Summary Political and military The year 1900 was the end of the 19th century and the beginning of the 20th century. Two days into the new year, the U.S. Secretary of State John Hay announced the Open Door Policy regarding China, advocating for equal access for all nations to the Chinese market. The Galveston hurricane would become the deadliest natural disaster in United States history, killing between 6,000 and 12,000 people, mostly in and near Galveston, Texas, as well as leaving 10,000 people homeless, destroying 7,000 buildings of all kinds in Galveston. As of 2025, it remains the fourth deadliest Atlantic hurricane on record. An ongoing Boxer Rebellion in China escalates with multiple attacks by the Boxers on Chines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared Guidance
Infrared homing is a passive weapon guidance system which uses the infrared (IR) light emission from a target to track and follow it seamlessly. Missiles which use infrared seeking are often referred to as "heat-seekers" since infrared is radiated strongly by hot bodies. Many objects such as people, vehicle engines and aircraft generate and emit heat and so are especially visible in the infrared wavelengths of light compared to objects in the background. Infrared seekers are passive devices, which, unlike radar, provide no indication that they are tracking a target. That makes them suitable for sneak attacks during visual encounters or over longer ranges when they are used with a forward looking infrared or similar cueing system. Heat-seekers are extremely effective: 90% of all United States air combat losses between 1984 and 2009 were caused by infrared-homing missiles. They are, however, subject to a number of simple countermeasures, most notably by dropping flares behin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jena
Jena (; ) is a List of cities and towns in Germany, city in Germany and the second largest city in Thuringia. Together with the nearby cities of Erfurt and Weimar, it forms the central metropolitan area of Thuringia with approximately 500,000 inhabitants, while the city itself has a population of about 110,000. Jena is a centre of education and research. The University of Jena (formally the Friedrich Schiller University) was founded in 1558 and had 18,000 students in 2017 and the Ernst-Abbe-Hochschule Jena serves another 5,000 students. Furthermore, there are many institutes of the leading German research societies. Jena was first mentioned in 1182 and stayed a small town until the 19th century, when industry developed. For most of the 20th century, Jena was a world centre of the optical industry around companies such as Carl Zeiss AG, Carl Zeiss, Schott AG, Schott and Jenoptik (since 1990). As one of only a few medium-sized cities in Germany, it has some high-rise buildings in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heidelberg
Heidelberg (; ; ) is the List of cities in Baden-Württemberg by population, fifth-largest city in the States of Germany, German state of Baden-Württemberg, and with a population of about 163,000, of which roughly a quarter consists of students, it is List of cities in Germany by population, Germany's 51st-largest city. Located about south of Frankfurt, Heidelberg is part of the densely populated Rhine-Neckar, Rhine-Neckar Metropolitan Region which has its centre in Mannheim. Heidelberg is located on the Neckar River, at the point where it leaves its narrow valley between the Oden Forest and the Kleiner Odenwald, Little Oden Forest, and enters the wide Upper Rhine Plain. The old town lies in the valley, the end of which is flanked by the Königstuhl (Odenwald), Königstuhl in the south and the Heiligenberg (Heidelberg), Heiligenberg in the north. The majority of the population lives in the districts west of the mountains in the Upper Rhine Plain, into which the city has expan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ternopil Oblast
Ternopil Oblast (), also referred to as Ternopilshchyna () or Ternopillia (), is an Oblasts of Ukraine, oblast (province) of Ukraine. Its Capital (political), administrative center is Ternopil, through which flows the Seret (river), Seret, a tributary of the Dniester. Population: One of the natural wonders of the region are its cave complexes.Tell about Ukraine. Ternopil Oblast . 24 Kanal (youtube). Although Ternopil Oblast is among the smallest regions in Ukraine, over 100 caves have been discovered there. Scientists believe these are only 20% of all possible caves in the region. The biggest cave is Optymistychna Cave. Measuring in total length, it is the longest cave in Eurasia and the list of longest caves, fifth-longest in the world. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
