Energy Star

Energy Star (trademarked ENERGY STAR) is an international standard for energy efficient consumer products originated in the United States. It was created in 1992 by the Environmental Protection Agency and the Department of Energy. Since then, Australia, Canada, Japan, New Zealand, Taiwan, and the European Union have adopted the program. Devices carrying the Energy Star service mark, such as computer products and peripherals, kitchen appliances, buildings and other products, generally use 20–30% less energy than required by federal standards. In the United States, the Energy Star label is also shown on EnergyGuide appliance label of qualifying products.

History

The Energy Star program was developed by John S. Hoffman, inventor of the Green Programs at EPA, working closely with the IT industry, and implemented by Cathy Zoi and Brian Johnson. The program was intended to be part of a series of voluntary programs, such as Green Lights and the Methane Programs, that would demonstrate the potential for profit in reducing energy consumption and greenhouse gases by power plants.

Energy

In physics, energy is a property of objects which can be transferred to other objects or converted into different forms, but cannot be created or destroyed. The "ability of a system to perform work" is a common description, but it is difficult to give one single comprehensive definition of energy because of its many forms. For instance, in SI units, energy is measured in joules, and one joule is defined "mechanically", being the energy transferred to an object by the mechanical work of moving it a distance of 1 metre against a force of 1 newton. However, there are many other definitions of energy, depending on the context, such as thermal energy, radiant energy, electromagnetic, nuclear, etc., where definitions are derived that are the most convenient.

Common energy forms 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. All of the many forms of energy are convertible to other kinds of energy, and obey the law of conservation of energy which says that energy can be neither created nor be destroyed; however, it can change from one form to another.

Star

A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun. Other stars are visible to the naked eye from Earth during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth. Historically, the most prominent stars were grouped into constellations and asterisms, and the brightest stars gained proper names. Extensive catalogues of stars have been assembled by astronomers, which provide standardized star designations.

For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen into helium in its core, releasing energy that traverses the star's interior and then radiates into outer space. Once the hydrogen in the core of a star is nearly exhausted, almost all naturally occurring elements heavier than helium are created by stellar nucleosynthesis during the star's lifetime and, for some stars, by supernova nucleosynthesis when it explodes. Near the end of its life, a star can also contain degenerate matter. Astronomers can determine the mass, age, metallicity (chemical composition), and many other properties of a star by observing its motion through space, luminosity, and spectrum respectively. The total mass of a star is the principal determinant of its evolution and eventual fate. Other characteristics of a star, including diameter and temperature, change over its life, while the star's environment affects its rotation and movement. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung–Russell diagram (H–R diagram), allows the age and evolutionary state of a star to be determined.

Star (disambiguation)

A star is a luminous cosmic body.

Star, Stars or The Star may also refer to:

Symbols or shapes

Geography

Russia

United Kingdom

United States

She Wolf

She Wolf (Spanish: Loba) is the eighth studio album by Colombian singer-songwriter Shakira. It was released on 9 October 2009, by Epic Records and Sony Music Latin. As executive producers, Shakira and Amanda Ghost enlisted collaborators including The Neptunes, John Hill, Wyclef Jean, Lukas Burton, Future Cut, Jerry Duplessis and Timbaland. Musically, the record shifts from her traditional Latin pop and pop rock musical styles, instead exploring electropop, with influences of folk and world music. The lyrical themes of the album mostly focus on love and relationships and were based on the conversations Shakira had with her friends.

She Wolf reached number one on the charts of Argentina, Ireland, Italy, Mexico and Switzerland. It also charted inside the top five in Spain, Germany and the United Kingdom. It debuted at number fifteen on the Billboard 200. She Wolf was certified double-platinum in Colombia and Mexico, platinum in Italy and Spain, and gold in numerous countries including France and the United Kingdom.