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Keri (island)
Keri () is a Estonian island in the Gulf of Finland. It is located about 6 km north of the island Prangli, and is one of the northernmost islands of Estonia. The uninhabited island is the site of notable Keri lighthouse. Keri was first mentioned in 1623. Keri has long been situated by important sea routes. Therefore, in 1719 a Keri Lighthouse, lighthouse was erected there on the order of Peter the Great. The present lighthouse was built in 1803. During a well drilling in 1902 natural gas was discovered. From 1906 to 1912 the gas was used to power the lighthouse and heat the other buildings on the island. During that time it was the only lighthouse in the world to be powered by natural gas. In 1912 after a seismic impulse the gas flow stopped. The island has been inhabited only by the families of the lighthouse keepers. The last keeper left the island in September 2002. Since then the lighthouse operates automatically; the power is derived from a wind turbine and solar panels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ilyushin DB-3
The Ilyushin DB-3, where "DB" stands for ''Dalniy Bombardirovshchik'' ( Russian: Дальний бомбардировщик) meaning "long-range bomber", is a Soviet bomber aircraft of World War II. It was a twin-engined, low-wing monoplane that first flew in 1935. 1,528 were built. The DB-3 was the precursor of the Ilyushin Il-4 (originally designated DB-3F). Design and development The genesis of the DB-3 lay in the BB-2, Sergey Ilyushin's failed competitor to the Tupolev SB. Ilyushin was able to salvage the work and time invested in the BB-2's design by recasting it as a long-range bomber, again competing against a Tupolev design, the DB-2, to meet the stringent requirements of an aircraft capable of delivering a bombload to a range of at a maximum speed no less than . He had redesigned the BB-2 to take advantage of the radial Gnome-Rhône Mistral Major 14Kdrs engine, for which the Soviets had purchased a license in 1934 as the M-85, and had begun construction of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet Union, it dissolved in 1991. During its existence, it was the list of countries and dependencies by area, largest country by area, extending across Time in Russia, eleven time zones and sharing Geography of the Soviet Union#Borders and neighbors, borders with twelve countries, and the List of countries and dependencies by population, third-most populous country. An overall successor to the Russian Empire, it was nominally organized as a federal union of Republics of the Soviet Union, national republics, the largest and most populous of which was the Russian SFSR. In practice, Government of the Soviet Union, its government and Economy of the Soviet Union, economy were Soviet-type economic planning, highly centralized. As a one-party state go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaleva (airplane)
''Kaleva'' was a civilian Junkers Ju 52 passenger airplane belonging to the Finnish carrier Aero O/Y. On 14 June 1940, as Flight 1631 from Tallinn in Estonia to Helsinki in Finland, it was shot down over the Gulf of Finland by two combat aircraft of the Soviet military and downed near the Estonian island of Keri, killing all nine on board. The incident occurred during the Interim Peace between the Soviet Union and Finland, and at the outset of the Soviet occupation of Estonia. The airplane's wreck was found on 5 June 2024 by Estonian unmanned underwater vehicles near the Keri lighthouse in Estonian territorial waters. The wreck is located at a depth of 71 to 76 meters. Shootdown On 14 June 1940, ''Kaleva'' had already made the scheduled stops along the route Stockholm-Turku-Helsinki-Tallinn and, as Aero Flight 1631 on its first return leg, was due to fly from Tallinn (Ülemiste) to Helsinki (Malmi) airport. A few minutes after taking off from Tallinn, the airliner was jo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Panels
A solar panel is a device that converts sunlight into electricity by using photovoltaic (PV) cells. PV cells are made of materials that produce excited electrons when exposed to light. These electrons flow through a circuit and produce direct current (DC) electricity, which can be used to power various devices or be stored in batteries. Solar panels are also known as solar cell panels, solar electric panels, or PV modules. Solar panels are usually arranged in groups called arrays or systems. A photovoltaic system consists of one or more solar panels, an inverter that converts DC electricity to alternating current (AC) electricity, and sometimes other components such as controllers, meters, and trackers. Most panels are in solar farms or rooftop solar panels which supply the electricity grid. Some advantages of solar panels are that they use a renewable and clean source of energy, reduce greenhouse gas emissions, and lower electricity bills. Some disadvantages are tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Turbine
A wind turbine is a device that wind power, converts the kinetic energy of wind into electrical energy. , hundreds of thousands of list of most powerful wind turbines, large turbines, in installations known as wind farms, were generating over 650 gigawatts of power, with 60 GW added each year. Wind turbines are an increasingly important source of intermittent renewable energy, and are used in many countries to lower energy costs and reduce reliance on fossil fuels. One study claimed that, wind had the "lowest relative greenhouse gas emissions, the least water consumption demands and the most favorable social impacts" compared to photovoltaic, hydroelectricity, hydro, geothermal power, geothermal, coal power, coal and gas-fired power plant, gas energy sources. Smaller wind turbines are used for applications such as battery charging and remote devices such as traffic warning signs. Larger turbines can contribute to a domestic power supply while selling unused power back to the u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse Keeper
A lighthouse keeper or lightkeeper is a person responsible for tending and caring for a lighthouse, particularly the light and lens in the days when oil lamps and clockwork mechanisms were used. Lighthouse keepers were sometimes referred to as "wickies" because of their job trimming the wicks. Duties and functions Historically, lighthouse keepers were needed to trim the wicks, replenish fuel, wind clockworks and perform maintenance tasks such as cleaning lenses and windows. They were also responsible for the fog signal and the weather station, and played a major role in search and rescue at sea. Because most lighthouses are located in remote, isolated or inaccessible areas on islands and coastlines, it was typical for the work of lighthouse keeper to remain within a family, passing from parents to child, all of whom lived in or near the lighthouse itself. "Stag light" was an unofficial term given to some isolated lighthouses in the United States Lighthouse Service. It meant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Gas
Natural gas (also fossil gas, methane gas, and gas) is a naturally occurring compound of gaseous hydrocarbons, primarily methane (95%), small amounts of higher alkanes, and traces of carbon dioxide and nitrogen, hydrogen sulfide and helium. Methane is a colorless and odorless gas, and, after carbon dioxide, is the second-greatest greenhouse gas that contributes to global climate change. Because natural gas is odorless, a commercial odorizer, such as Methanethiol (mercaptan brand), that smells of hydrogen sulfide (rotten eggs) is added to the gas for the ready detection of gas leaks. Natural gas is a fossil fuel that is formed when layers of organic matter (primarily marine microorganisms) are thermally decomposed under oxygen-free conditions, subjected to intense heat and pressure underground over millions of years. The energy that the decayed organisms originally obtained from the sun via photosynthesis is stored as chemical energy within the molecules of methane and other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter The Great
Peter I (, ; – ), better known as Peter the Great, was the Sovereign, Tsar and Grand Prince of all Russia, Tsar of all Russia from 1682 and the first Emperor of Russia, Emperor of all Russia from 1721 until his death in 1725. He reigned jointly with his half-brother Ivan V of Russia, Ivan V until 1696. From this year, Peter was an Absolute monarchy, absolute monarch, an autocrat who remained the ultimate authority and organized a well-ordered police state. Much of Peter's reign was consumed by lengthy wars against the Ottoman Empire, Ottoman and Swedish Empire, Swedish empires. His Azov campaigns were followed by the foundation of the Imperial Russian Navy, Russian Navy; after his victory in the Great Northern War, Russia annexed a Treaty of Nystad, significant portion of the eastern Baltic Sea, Baltic coastline and was officially renamed from a Tsardom of Russia, tsardom to an Russian Empire, empire. Peter led a cultural revolution that replaced some of the traditionalist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prangli
Prangli () is an Estonian island in the Gulf of Finland. The earliest known written records of Prangli date from 1387, the island was then called Rango, and it had been settled by Swedes. The first Estonian-speaking inhabitants are known to have lived on the island in the 17th century. Prangli is part of Viimsi Parish. In Kelnase is a harbour which is connected by ferry to Leppneeme on the mainland. The vegetation, especially in the east of the island, is mainly fir trees. The lighthouse on Prangli was built in 1923. In 1941, the Estonian steamship '' Eestirand'' was shipwrecked off the coast of Prangli Island after a German air attack. The ''Eestirand'' was part of a fleet of ships carrying Soviet troops to Leningrad during the Soviet evacuation of Tallinn. The Estonian crew and conscripts managed to disarm Soviet military personnel aboard the ship and take control of the island, hoisting the flag of the Estonian Republic up a tall pine tree. The revolt saved approximatel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Of Finland
The Gulf of Finland (; ; ; ) is the easternmost arm of the Baltic Sea. It extends between Finland to the north and Estonia to the south, to Saint Petersburg—the second largest city of Russia—to the east, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the gulf belong to Russia, and some of Russia's most important oil harbors are located there, including Primorsk, Leningrad Oblast, Primorsk. As the seaway to Saint Petersburg, the gulf is of considerable strategic importance to Russia. Some of the Baltic Sea#Environmental status, environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. Proposals for an undersea tunnel, undersea Helsinki–Tallinn Tunnel through the gulf have been made. Geography The Gulf of Finland has an area of . The length (from the Hanko Peninsula to Saint Petersburg) is and the width varies from near the entrance to on the meridian of Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
