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The Energy Portal
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

A plasma globe, using electrical energy to create plasma, light, heat, movement and a faint sound

In physics, energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed; matter and energy may also be converted to one another. The unit of measurement for energy in the International System of Units (SI) is the joule (J).

Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy.

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.

Human civilization requires energy to function, which it gets from energy resources such as fossil fuels, nuclear fuel, or renewable energy. The Earth's climate and ecosystems processes are driven by the energy the planet receives from the Sun (although a small amount is also contributed by geothermal energy). (Full article...)

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Manresa Island is a former island located in Norwalk, Connecticut, at the mouth of Norwalk Harbor in the Long Island Sound. The earliest name for the landform was Boutons Island, which dates to 1664. By the 19th century, the island had been purchased by John H. Keyser, who lived there and cultivated rare vegetation. He built a causeway in 1860, connecting the island to the mainland of South Norwalk. This gave rise to the name Keyser Island, which was sold to the Jesuits toward the end of the century.

In the 1950s, Connecticut Light & Power constructed a coal-fired power plant on the land. Over the years, the company filled in much of the tidal flats surrounding the island with coal ash, greatly increasing the size of the island from its original 23 acres (9.3 hectares) to 144 acres (58 hectares), and leading to significant ground pollution. In 1972, the plant was converted to burn fuel oil, and an oil spill occurred, damaging the surrounding environment. The plant was sold to NRG Energy in 1999, and was severely damaged by Hurricane Sandy in 2012, leading to its permanent closure in 2013. A portion of the land today is an undeveloped and ecologically important marine habitat. (Full article...)

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James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish mathematician and theoretical physicist. His most significant achievement was formulating a set of equations – eponymously named Maxwell's equations – that for the first time expressed the basic laws of electricity and magnetism in a unified fashion. Maxwell's contributions to physics are considered by many to be of the same magnitude as those of Isaac Newton and Albert Einstein.

Maxwell studied natural philosophy, moral philosophy, and mental philosophy at the University of Edinburgh, before graduating in mathematics at the University of Cambridge, where he would conduct much of his career. He built on Michael Faraday's work on magnetic induction, using elements of geometry and algebra to demonstrate that electric and magnetic fields travel through space, in the form of waves, and at the constant speed of light. Finally, in 1861, Maxwell proposed that light consisted of undulations in the same medium that is the cause of electric and magnetic phenomena. In the same year he was elected to the Royal Society.

In 1864, Maxwell presented what are now known as Maxwell's equations to the Royal Society. These collectively describe the behaviour of both the electric and magnetic fields, as well as their interactions with matter.

In the news

22 June 2024 – Russian invasion of Ukraine
Russia launches missile and drone strikes across Ukraine, injuring two people and damaging energy infrastructure. Ukraine says that it shot down 12 of 16 missiles and all 13 drones. (Reuters)
16 June 2024 – Russian invasion of Ukraine
Norway announces that it will give Ukraine 1.1 billion kroner (US$103 million) to help repair its energy infrastructure and secure the country's electricity supply before the winter. (Le Monde)
15 June 2024 – Russian invasion of Ukraine
The United States announces a $1.5 billion aid package to Ukraine, focused primarily on the country's energy industry and humanitarian assistance. (Politico)

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