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2008 Chelopechene Explosions
The 2008 Chelopechene explosions were a series of explosions that began early on Thursday morning 3 July 2008 at around 6:30 am local time at a munitions depot in the suburb of Chelopechene, 10 kilometres east of the centre of the Bulgarian capital, Sofia. The initial explosions were powerful enough to be heard in the entire capital and surrounding villages. The depot was part of a military facility (''Podelenie 18 250'') that specialised in dismantling obsolete ammunition. Timeline At 6:28 am, Sofia residents were awakened by a powerful, deafening explosion so loud it set off car alarms in districts as far away as Lyulin, some 15 km from the blast. Further east there was great panic among residents as the shockwave shattered windows and some trees were blown down. There was another powerful blast at 6:45 am. Explosions continued throughout the day prompting authorities to evacuate the residents of Chelopechene, Chepintsi and Botunets. A mushroom cloud formed after the firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxiway
A taxiway is a path for aircraft at an airport connecting runways with Airport apron, aprons, hangars, Airport terminal, terminals and other facilities. They mostly have a hard surface such as Asphalt concrete, asphalt or concrete, although smaller general aviation airports sometimes use gravel or grass. Most airports do not have a specific speed limit for taxiing (though some do). There is a general rule on safe speed based on obstacles. Operators and aircraft manufacturers might have limits. Typical taxi speeds are . High-speed exit Busy airports typically construct high-speed or rapid-exit taxiways to allow aircraft to leave the runway at higher speeds. This allows the aircraft to vacate the runway quicker, permitting another to land or take off in a shorter interval of time. This is accomplished by reducing the angle the exiting taxiway intercepts the runway at to 30 degrees, instead of 90 degrees, thus increasing the speed at which the aircraft can exit the runway onto t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosions In Bulgaria
An explosion is a rapid expansion in volume of a given amount of matter associated with an extreme outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Explosions may also be generated by a slower expansion that would normally not be forceful, but is not allowed to expand, so that when whatever is containing the expansion is broken by the pressure that builds as the matter inside tries to expand, the matter expands forcefully. An example of this is a volcanic eruption created by the expansion of magma in a magma chamber as it rises to the surface. Supersonic explosions created by high explosives are known as detonations and travel through shock waves. Subsonic explosions are created by low explosives through a slower combustion process known as deflagration. Causes For an explosion to occur, there must be a rapid, forceful expansion of matter. There are numerous ways this can happen, both naturally and artificially, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2008 Industrial Disasters
8 (eight) is the natural number following 7 and preceding 9. Etymology English ''eight'', from Old English '', æhta'', Proto-Germanic ''*ahto'' is a direct continuation of Proto-Indo-European '' *oḱtṓ(w)-'', and as such cognate with Greek and Latin , both of which stems are reflected by the English prefix oct(o)-, as in the ordinal adjective ''octaval'' or ''octavary'', the distributive adjective is ''octonary''. The adjective ''octuple'' (Latin ) may also be used as a noun, meaning "a set of eight items"; the diminutive ''octuplet'' is mostly used to refer to eight siblings delivered in one birth. The Semitic numeral is based on a root ''*θmn-'', whence Akkadian ''smn-'', Arabic ''ṯmn-'', Hebrew ''šmn-'' etc. The Chinese numeral, written (Mandarin: ''bā''; Cantonese: ''baat''), is from Old Chinese ''*priāt-'', ultimately from Sino-Tibetan ''b-r-gyat'' or ''b-g-ryat'' which also yielded Tibetan '' brgyat''. It has been argued that, as the cardinal num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosions In 2008
An explosion is a rapid expansion in volume of a given amount of matter associated with an extreme outward release of energy, usually with the generation of high temperatures and release of high-pressure gases. Explosions may also be generated by a slower expansion that would normally not be forceful, but is not allowed to expand, so that when whatever is containing the expansion is broken by the pressure that builds as the matter inside tries to expand, the matter expands forcefully. An example of this is a volcanic eruption created by the expansion of magma in a magma chamber as it rises to the surface. Supersonic explosions created by high explosives are known as detonations and travel through shock waves. Subsonic explosions are created by low explosives through a slower combustion process known as deflagration. Causes For an explosion to occur, there must be a rapid, forceful expansion of matter. There are numerous ways this can happen, both naturally and artificially, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2008 Gërdec Explosions
8 (eight) is the natural number following 7 and preceding 9. Etymology English ''eight'', from Old English '', æhta'', Proto-Germanic ''*ahto'' is a direct continuation of Proto-Indo-European '' *oḱtṓ(w)-'', and as such cognate with Greek and Latin , both of which stems are reflected by the English prefix oct(o)-, as in the ordinal adjective ''octaval'' or ''octavary'', the distributive adjective is ''octonary''. The adjective ''octuple'' (Latin ) may also be used as a noun, meaning "a set of eight items"; the diminutive '' octuplet'' is mostly used to refer to eight siblings delivered in one birth. The Semitic numeral is based on a root ''*θmn-'', whence Akkadian ''smn-'', Arabic ''ṯmn-'', Hebrew ''šmn-'' etc. The Chinese numeral, written (Mandarin: ''bā''; Cantonese: ''baat''), is from Old Chinese ''*priāt-'', ultimately from Sino-Tibetan ''b-r-gyat'' or ''b-g-ryat'' which also yielded Tibetan '' brgyat''. It has been argued that, as the cardinal nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgarian Academy Of Sciences
The Bulgarian Academy of Sciences (abbreviated BAS; , ''Bŭlgarska akademiya na naukite'', abbreviated БАН) is the National Academy of Bulgaria, established in 1869. The Academy, with headquarters in Sofia, is autonomous and consists of a Society of Academicians, Correspondent Members and Foreign Members. It publishes and circulates different scientific works, encyclopaedias, dictionaries and journals, and runs its own publishing house. The activities are distributed in three main branches: ''Natural, mathematical and engineering sciences''; ''Biological, medical and agrarian sciences'' and ''Social sciences, humanities and art''. They are structured in 42 independent scientific institutes, and a dozen of laboratories and other sections. Julian Revalski has been the president of the BAS since 2016. As of 2022, its budget was 119,860 million leva (€61.28 million). History As Bulgaria was part of the Ottoman Empire, Bulgarian émigrés founded the ''Bulgarian Literary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mladost, Sofia
Mladost () is a district of Sofia. It is one of the most modern and fast developing areas in the city. it has 104,047 inhabitants which makes it the second-most-populous district in the capital, situated in the south-east end of Sofia, between and Vitosha mountain. The largest business complex in Bulgaria is situated in the south end: Business Park Sofia. Mladost is among the safest and cleanest districts of Sofia. In May 2011 it became one of the first neighbourhoods of Sofia to have a complete cycling route of more than 8 km. Economy The district has a flourishing economy. There are two industrial and scientific zones, "Iztok" and "Gorublyane". "Iztok" has an area of 201 ha and specialises in the production of electronics, machinery and press industry. There are a number of important scientific institutes including the Institute of Hydrology and Meteorology; Library Institute; Institute of Electronics; Institute of Astronomy; Institute of Physics of the Solid Objects; Insti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pancharevo
Pancharevo (, , also transcribed as Pančarevo) is a district located on the outskirts of the Bulgarian capital Sofia and occupies the southeastern part of the Capital Municipality. Geographically, it lies partially in the Sofia Valley and the mountain ranges of Vitosha, Plana and Lozenska, a division of Sredna Gora. the village has 3,433 inhabitants, but the district has about 28,000 inhabitants. It is the largest region in Sofia with a total area of . It includes the largest artificial lake in Bulgaria, the Iskar Reservoir, as well as Lake Pancharevo and Pasarel Reservoir, located along the river Iskar (river), Iskar in the Pancharevo Gorge. The district consists of 10 villages, with the village of Pancharevo (village), Pancharevo serving as the district seat: * Bistritsa, Sofia, Bistritsa * German, Bulgaria, German * Kazichene * Kokalyane * Krivina * Lozen, Sofia, Lozen * Pancharevo (village), Pancharevo * Pasarel, Sofia, Pasarel * Plana, Bulgaria, Plana * Zheleznitsa, Sofia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicentre
The epicenter (), epicentre, or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Determination The primary purpose of a seismometer is to locate the initiating points of earthquake epicenters. The secondary purpose, of determining the 'size' or magnitude must be calculated after the precise location is known. The earliest seismographs were designed to give a sense of the direction of the first motions from an earthquake. The Chinese frog seismograph would have dropped its ball in the general compass direction of the earthquake, assuming a strong positive pulse. We now know that first motions can be in almost any direction depending on the type of initiating rupture (focal mechanism). The first refinement that allowed a more precise determination of the location was the use of a time scale. Instead of merely noting, or recording, the absolute motions of a p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richter Scale
The Richter scale (), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale". This was later revised and renamed the local magnitude scale, denoted as ML or .. Because of various shortcomings of the original scale, most seismological authorities now use other similar scales such as the moment magnitude scale () to report earthquake magnitudes, but much of the news media still erroneously refers to these as "Richter" magnitudes. All magnitude scales retain the logarithmic character of the original and are scaled to have roughly comparable numeric values (typically in the middle of the scale). Due to the variance in earthquakes, it is essential to understand the Richter scale uses common logarithms simply to make the measurements mana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
