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Portal:Energy

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The Energy Portal
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Welcome to Wikipedia's Energy portal, your gateway to energy. This portal is aimed at giving you access to all energy related topics in all of its forms.

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Introduction

The Sun is the source of energy for most of life on Earth. As a star, the Sun is heated to high temperatures by the conversion of nuclear binding energy due to the fusion of hydrogen in its core. This energy is ultimately transferred (released) into space mainly in the form of radiant (light) energy.

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton.

Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field (gravitational, electric or magnetic), the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy due to an object's temperature.

Mass and energy are closely related. Due to mass–energy equivalence, any object that has mass when stationary (called rest mass) also has an equivalent amount of energy whose form is called rest energy, and any additional energy (of any form) acquired by the object above that rest energy will increase the object's total mass just as it increases its total energy. For example, after heating an object, its increase in energy could be measured as a small increase in mass, with a sensitive enough scale.

Living organisms require energy to stay alive, such as the energy humans get from food. Human civilization requires energy to function, which it gets from energy resources such as fossil fuels, nuclear fuel, or renewable energy. The processes of Earth's climate and ecosystem are driven by the radiant energy Earth receives from the sun and the geothermal energy contained within the earth.


Selected article

Oil shale industry is an industry of mining and processing of oil shale—a fine-grained sedimentary rock, containing significant amounts of kerogen (a solid mixture of organic chemical compounds), from which liquid hydrocarbons can be manufactured. The industry has developed in Brazil, China, Estonia and to some extent in Germany, Israel and Russia. Several other countries are currently conducting research on their oil shale reserves and production methods to improve efficiency and recovery. However, Australia has halted their pilot projects due to environmental concerns.

Oil shale has been used for industrial purposes since the early 1601 when it was mined for its minerals. Since the late 1800s, shale oil has also been used for its oil content and as a low grade fuel for power generation. However, barring countries having significant oil shale deposits, its use for power generation is not particularly widespread. Similarly, oil shale is a source for production of synthetic crude oil and it is seen as a solution towards increasing domestic production of oil in countries that are reliant on imports. Read more...


Selected image

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Photo credit: Greenpeace
Oil shale is a source of unconventional oil, which combustion and thermal processing generate atmospheric emissions


Did you know?

  • According to research by the IPCC, government funding for most energy research programmes has been flat or declining for nearly 20 years, and is now about half the 1980 level?
Cyclone Catarina from the ISS on March 26 2004.JPG

Selected biography

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Albert Arnold "Al" Gore, Jr. (born 31 March 1948) is an American politician, teacher, businessman, and environmentalist. From 1993 to 2001, he was the 45th Vice President of the United States, serving while Bill Clinton was President. In the 2000 election Gore won the popular vote but not the electoral college victory.

Gore lectures widely on the topic of global warming and has given his keynote presentation at least 1,000 times across the world. In 2006 he starred in the Academy Award-winning documentary An Inconvenient Truth, discussing global warming and the environment, based on his presentation.

Gore was one of the first politicians to grasp the seriousness of climate change and to call for a reduction in greenhouse gas emissions. He held the first congressional hearings on the subject in the late 1970s. Gore pushed strongly for the passage of the Kyoto Treaty in the United States during the late 1990s.

In 2007 Al Gore and Richard Branson announced the Virgin Earth Challenge, offering a $25 million prize for the first viable design which results in the removal of atmospheric greenhouse gases. He is also one of the backers of the Live Earth concerts to promote action on climate change. Read more...


In the news

6 November 2019 – Nuclear program of Iran
French media reports that Iranian nuclear scientists began injecting uranium into centrifuges in the presence of International Atomic Energy Agency inspectors at the Fordow Fuel Enrichment Plant. Effectively it turns the plant from a research site into an active nuclear site, in further violation of the Joint Comprehensive Plan of Action. (Al Jazeera)
4 November 2019 – Iran–United States relations
On the 40th anniversary of the Iran hostage crisis, Atomic Energy Organization of Iran chairman Ali Akbar Salehi announces his government has doubled the amount of advanced centrifuges limited by the Joint Comprehensive Plan of Action, and are working on a prototype that is fifty times faster than those allowed. He blames the United States's withdrawal from the agreement last year for these actions. (Al Jazeera)
17 October 2019 – List of Trump administration dismissals and resignations
U.S. Secretary of Energy Rick Perry announces he will resign by the end of the year. (NPR)

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