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Solar Energy In Israel
The use of solar energy began in Israel in the 1950s with the development by Levi Yissar of a solar water heater to address the energy shortages that plagued the new country.Petrotyranny by John C. Bacher, David Suzuki, published by Dundurn Press Ltd., 2000; Page 7/ref> By 1967 around 5% of water of households were solar heated and 50,000 solar heaters had been sold. With the 1970s oil crisis, Harry Zvi Tabor developed the prototype of the solar water heater now used in over 90% of Israeli homes.At the Zenith of Solar Energy Neal Sandler, '''', March 26, 2008. There are over 1.3 million solar water heaters instal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photovoltaic Arrays At The Israeli National Solar Energy Center
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 generates no pollution and no 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 in PV system m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Faiman
David Faiman (born 1944 in the United Kingdom) is a British and Israeli physicist. Background Faiman was educated at Willesden County Grammar School and the University of London, and received his Ph.D from the University of Illinois in 1969. After post-doctoral appointments in Oxford and CERN he arrived in Israel in September 1973, to take up an appointment in theoretical physics at the Weizmann Institute of Science. However, as a result of the energy crisis that followed the Yom Kippur War, he re-directed his research interests from elementary particles into solar energy. In 1976 he was recruited by Amos Richmond to assist in founding the Jacob Blaustein Institutes for Desert Research at the Sede Boqer campus of Ben-Gurion University of the Negev. Faiman created the Institutes’ Department of Solar Energy & Environmental Physics, which he headed concurrently with the Ben-Gurion National Solar Energy Center until his retirement in 2013 at the rank of Professor Emeritus. Faiman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
30th Parallel North
The 30th parallel north is a circle of latitude that is 30 degree (angle), degrees true north, north of the Earth, Earth's equator, equatorial plane. It stands one-third of the way between the equator and the North Pole and crosses Africa, Asia, the Pacific Ocean, North America and the Atlantic Ocean. The parallel is used in some contexts to delineate Europe or what is associated with the continent of Europe as a southernmost limit, e.g. to qualify for membership of the European Broadcasting Union. It is the approximate southern border of the horse latitudes in the Northern Hemisphere, meaning that much of the land area touching the 30th parallel is arid or semi-arid. If there is a source of wind from a body of water the area would more likely be humid subtropical. At this latitude the sun is visible for 14 hours, 5 minutes during the summer solstice and 10 hours, 13 minutes during the winter solstice, and the night, nighttime duration lasts 9 hours, 55 minutes during the summe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographic Latitude
In geography, latitude is a coordinate that specifies the north–south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pole, with 0° at the Equator. Lines of constant latitude, or ''parallels'', run east–west as circles parallel to the equator. Latitude and ''longitude'' are used together as a coordinate pair to specify a location on the surface of the Earth. On its own, the term "latitude" normally refers to the ''geodetic latitude'' as defined below. Briefly, the geodetic latitude of a point is the angle formed between the vector perpendicular (or ''normal'') to the ellipsoidal surface from the point, and the plane of the equator. Background Two levels of abstraction are employed in the definitions of latitude and longitude. In the first step the physical surface is modeled by the geoid, a surface which approximates the mean sea level over the oceans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research And Development
Research and development (R&D or R+D), known in Europe as research and technological development (RTD), is the set of innovative activities undertaken by corporations or governments in developing new services or products, and improving existing ones. Research and development constitutes the first stage of development of a potential new service or the production process. R&D activities differ from institution to institution, with two primary models of an R&D department either staffed by engineers and tasked with directly developing new products, or staffed with industrial scientists and tasked with applied research in scientific or technological fields, which may facilitate future product development. R&D differs from the vast majority of corporate activities in that it is not intended to yield immediate profit, and generally carries greater risk and an uncertain return on investment. However R&D is crucial for acquiring larger shares of the market through the marketisation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopedia Of The Earth
The ''Encyclopedia of Earth'' (abbreviated ''EoE'') is an electronic reference about the Earth, its natural environments, and their interaction with society. The ''Encyclopedia'' is described as a free, fully searchable collection of articles written by scholars, professionals, educators, and other approved experts, who collaborate and review each other's work. The articles are written in non-technical language and are intended to be useful to students, educators, scholars, and professionals, as well as to the general public. The authors, editors, and even copy editors are attributed on the articles with links to biographical pages on those individuals.''The Encyclopedia of Earth'' , Ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jerusalem Post
''The Jerusalem Post'' is a broadsheet newspaper based in Jerusalem, founded in 1932 during the British Mandate of Palestine by Gershon Agron as ''The Palestine Post''. In 1950, it changed its name to ''The Jerusalem Post''. In 2004, the paper was bought by Mirkaei Tikshoret, a diversified Israeli media firm controlled by investor Eli Azur. In April 2014, Azur acquired the newspaper ''Maariv''. The newspaper is published in English and previously also printed a French edition. Originally a left-wing newspaper, it underwent a noticeable shift to the political right in the late 1980s. From 2004 editor David Horovitz moved the paper to the center, and his successor in 2011, Steve Linde, pledged to provide balanced coverage of the news along with views from across the political spectrum. In April 2016, Linde stepped down as editor-in-chief and was replaced by Yaakov Katz, a former military reporter for the paper who previously served as an adviser to former Prime Minister Naftali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metric System
The metric system is a system of measurement that succeeded the Decimal, decimalised system based on the metre that had been introduced in French Revolution, France in the 1790s. The historical development of these systems culminated in the definition of the International System of Units (SI) in the mid-20th century, under the oversight of an international standards body. Adopting the metric system is known as ''metrication''. The historical evolution of metric systems has resulted in the recognition of several principles. Each of the fundamental dimensions of nature is expressed by a single base unit (measurement), base unit of measure. The definition of base units has increasingly been realisation (metrology), realised from natural principles, rather than by copies of physical artefacts. For quantities derived from the fundamental base units of the system, units SI derived unit, derived from the base units are used—e.g., the square metre is the derived unit for area, a qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Arabic Weights And Measures
The Ancient Arabic unit of measurements were a system of using units to associate with physical quantities. Arabic symbols are used to represent the values. The measurements were based on body measurements and common natural items. The length of forearm, shin and the standard size of a typical village were among the most accepted length units. About surface, usually Jerib or Djerib was the most usual unit which is mostly similar to acre or hectare. Another unit known as Sa was mostly used to measure volume which is approximately equal to 3 liters. Although having similar names, the size of units may defer depending on region. Length See also * Uqiyyah, the Arabic ounce or half-pound, depending on region. * Qafiz, an Arabic unit for measuring volumes. * Sāʿ, an ancient unit of volume, equal to 2 to 4 liters, depending on region. * The Arabic mile The Arab, Arabic, or Arabian mile ( ar, الميل, ''al-mīl'') was a historical Arabic unit of length. Its precise length is di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Units
The imperial system of units, imperial system or imperial units (also known as British Imperial or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments. The imperial system developed from earlier English units as did the related but differing system of customary units of the United States. The imperial units replaced the Winchester Standards, which were in effect from 1588 to 1825. The system came into official use across the British Empire in 1826. By the late 20th century, most nations of the former empire had officially adopted the metric system as their main system of measurement, but imperial units are still used alongside metric units in the United Kingdom and in some other parts of the former empire, notably Canada. The modern UK legislation defining the imperial system of units is given in the Weights and Measures Act ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Ben-Gurion
David Ben-Gurion ( ; he, דָּוִד בֶּן-גּוּרִיּוֹן ; born David Grün; 16 October 1886 – 1 December 1973) was the primary national founder of the State of Israel and the first prime minister of Israel. Adopting the name of Ben-Gurion in 1909, he rose to become the preeminent leader of the Jewish community in British-ruled Mandatory Palestine from 1935 until the establishment of the State of Israel in 1948, which he led until 1963 with a short break in 1954–55. Ben-Gurion's passion for Zionism, which began early in life, led him to become a major Zionist leader and executive head of the World Zionist Organization in 1946. As head of the Jewish Agency from 1935, and later president of the Jewish Agency Executive, he was the ''de facto'' leader of the Jewish community in Palestine, and largely led its struggle for an independent Jewish state in Mandatory Palestine. On 14 May 1948, he formally proclaimed the establishment of the State of Israel, and was t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prime Minister
A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not the head of state, but rather the head of government, serving under either a monarch in a democratic constitutional monarchy or under a president in a republican form of government. In parliamentary systems fashioned after the Westminster system, the prime minister is the presiding and actual head of government and head/owner of the executive power. In such systems, the head of state or their official representative (e.g., monarch, president, governor-general) usually holds a largely ceremonial position, although often with reserve powers. Under some presidential systems, such as South Korea and Peru, the prime minister is the leader or most senior member of the cabinet, not the head of government. In many systems, the prime minister ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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