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The efficiency of a conventional steam–electric power plant, defined as energy produced by the plant divided by the heating value of the fuel consumed by it, is typically 33 to 48%, limited as all heat engines are by the laws of thermodynamics (See: Carnot cycle). The rest of the energy must leave the plant in the form of heat.
My Pilot, Whale (2014) is a short documentary film directed by Alexander and Nicole Gratovsky, demonstrating direct communication between a human and free pilot whales in the open ocean. The entire underwater part was shot without underwater breathing equipment; both the operator and the person appearing in the frame are freediving.
Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions. In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. Devices designed to harness this energy are known as fusion reactors.
Wind power consumes no fuel, and emits no local air pollution, unlike fossil fuel power sources. Onshore wind farms can have a significant visual impact. [ 115 ] Due to a very low surface power density and spacing requirements, wind farms typically need to be spread over more land than other power stations.
The RSA SecurID authentication mechanism consists of a "token"—either hardware (e.g. a key fob) or software (a soft token)—which is assigned to a computer user and which creates an authentication code at fixed intervals (usually 60 seconds) using a built-in clock and the card's factory-encoded almost random key (known as the "seed").
[34] 100 tonnes of ash a day had to be disposed of by ejecting it into the sea. [35] The work was relentless, dirty and dangerous, and although firemen were paid relatively well, [34] there was a high suicide rate among those who worked in that capacity. [36] Exhaust steam leaving the reciprocating engines was fed into the turbine, which was ...
Karachi (/ k ə ˈ r ɑː tʃ i /; Urdu: کراچی [kə.ɾɑː.t͡ʃiː]; Sindhi: ڪراچي ; IPA: [kəˈraːtʃi] ⓘ) is the capital city of the Pakistani province of Sindh.It is the largest city in Pakistan and 12th largest in the world, with a population of over 20 million.