NounSingular energy Plural energies energy (plural energies)
Derived termsTerms derived from "energy"
Related termsFrom Wiktionary under the GNU Free Documentation License. In physics, energy (from the Greek ἐνέργεια - energeia, "activity, operation", from ἐνεργός - energos, "active, working") is a scalar physical quantity that describes the amount of work that can be performed by a force, an attribute of objects and systems that is subject to a conservation law. Different forms of energy include kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy. The forms of energy are often named after a related force. Any form of energy can be transformed into another form, but the total energy always remains the same. This principle, the conservation of energy, was first postulated in the early 19th century, and applies to any isolated system. According to Noether's theorem, the conservation of energy is a consequence of the fact that the laws of physics do not change over time. Although the total energy of a system does not change with time, its value may depend on the frame of reference. For example, a seated passenger in a moving airplane has zero kinetic energy relative to the airplane, but non-zero kinetic energy relative to the Earth. From Wikipedia under the
GNU Free Documentation License How energy saving light bulbs work - how do they reduce energy use? Q. Just curious and would appreciate a good explanation of the principle and science involved in how energy saving bulbs last so many years and reduce energy bills. Asked by Shirt-n-Tie-Boy - Sat Jul 5 12:08:18 2008 - - 11 Answers - 0 Comments A. an energy saving bulb use less electricity than a conventional bulb example a energy bulb uses 25 watts of electricity to give the sam amount of light as a 100 watt conventonal bulb energy saving bulbs are either LED( light emmiting diode) or more commonly flourescent which contain gasit takes less electricity to heat the gas giving more light per watt of electricity than a normal light bulb. a watt is a unit of electricity the more watts used the more electricity being used. look on some of your household appliances and you will find out how much each different appliance uses compare your kettle to a television the average kettle uses 2000 watts to 3000 watts or 2 to 3 kilowatts (KW) the average television uses 100 to 150 watts. hope… [cont.] Answered by species8472 - Sat Jul 5 12:31:30 2008 Does taking energy from the zero point field or quantum vacuum violate the 1st law of thermodynamics? Q. The first law states that "energy cannot be created or destroyed". Does taking energy from other dimensions really imply "creation", or just another way to obtain energy? Does it boil down to a violation because the extra dimensions have not been proven yet? Therefore, it "could" be a violation of the law? Asked by sassychickensuckerboy - Thu Mar 27 03:24:13 2008 - - 1 Answers - 0 Comments A. ok youve been watching star trek again Answered by Ask Z - Thu Mar 27 03:32:49 2008 How can geothermal energy be used in the future?
Q. The word geothermal comes from the Greek words geo (earth) and therme (heat). So, geothermal energy is heat from within the earth. We can use the steam and hot water produced inside the earth to heat buildings or generate electricity. Geothermal energy is a renewable energy source because the water is replenished by rainfall and the heat is continuosly produced inside the earth. Asked by CiNdY - Wed Mar 26 18:53:46 2008 - - 2 Answers - 3 Comments A. Geothermal energy can be used in the future as an alternative to fossil fuels and coal. It is a good source of energy because it does not cause pollution, and there is obviously a constant supply of it. This means that prices for geothermal energy will be consistent, unlike oil. However, it is a hard technology to master, and can only be used in parts of the world where there is enough heat in the earth (think hotspots or underwater volcanoes). I think some of the Scandinavian countries are using geothermal energy. Other renewable energy sources include hydropower, wind-power, solar power or nuclear power. Answered by sophie - Wed Mar 26 18:59:25 2008 From Yahoo Answer Search: "energy"  news.google.com Reuters In comparison, the American Clean Energy and Security Act working its way through Congress is targeting emissions reductions of 83 percent below 2005 levels ... New York Shows Congress "The Way" on Greenhouse Gas Reduction Public News Service Paterson says New York will reduce ghg emissions 80% Examiner.com List of Climate Leaders companies in Minnesota Minnesota Public Radio all 56 news articles » news.google.com ABC News GENEVA (Reuters) - The giant particle collider built to probe the origins of the universe will restart in November at a lower energy level following its ... CERN's collider to get 'safe' start in November CNET News Daily Wrap Up for August 7 - Energy International Business Times CERN: Damaged collider to restart at half energy Seattle Times all 338 news articles » news.google.com Rochester Democrat and Chronicle In the last column, I talked about how our family started our quest for a more energy -efficient home. One of the essential steps in this quest was the home ... and more » From Google News Search: "energy"  bandddesigns.com 529px x 650px | 208.90kB [source page] accompanies blow I love the no holds bar world of the energy drink business but this is seriously commercialism with out any shame and well yeah capitalism because money will be made It was like snorting a pixie stick that had been somehow flavored with sprite It burned like hell made my nose run and made me sneeze for about an hour I ve made better decisions Blow From Yahoo Image Search: "energy"  climateprogress.org Joe Mon, 03 Aug 2009 18:49:00 GM There's not a lot of room to expect to move the legislative product more aggressively than the House, said Grumet, the executive director of the National Commission on . Energy. Policy. You have to ask how much value there is in pushing ...  energyandcapital.com Keith Kohl Mon, 03 Aug 2009 18:53:51 GM Energy. and Capital Editor Keith Kohl delves into Florida's latest gambit -- its offshore oil reserves -- to help ease the effects of this recession.  digitaljournal.com unknown Mon, 03 Aug 2009 12:28:29 GM A stark assessment from the International . Energy. Agency's chief economist concludes that the world's top oil fields have already surpassed peak production and that the world's oil supplies are running out faster than predicted. From Google Blog Search: "energy" Energy is a fundamental concept in physics that is often defined as the capacity to do mechanical work — a definition disputed by many physicists. It also has a specific connotation of the forms of energy used for powering technological society. Sourced
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