Petroleum Articles

• Nature of Water
  Thermodynamics
  Graphene
  Chemistry
  Sports Science
  Inorganic Chemistry
   

  Boiling point

  The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid. A liquid may change to a gas at temperatures below the ... > more
• Nature of Water
  Sports Science
  Physics
  Chemistry
  Nuclear Energy
  Inorganic Chemistry
   
  

  Density

  Density is a measure of mass per unit of volume. Density is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume. An object made from a ... > more
• Solar Energy
  Energy Technology
  Thermodynamics
  Electricity
  Wind Energy
  Energy Policy
   
  

  Geothermal power

  Geothermal power is the use of geothermal heat for electricity generation. It is often referred to as a form of renewable energy, but because the heat at any location can eventually be depleted it ... > more
• Thermodynamics
  Energy Technology
  Sports Science
  Physics
  Aviation
  Solar Energy
   
  

  Heat pump

  A heat pump is a machine which moves heat from a low temperature reservoir to a higher temperature reservoir under supply of ... > more
• Global Warming
  Air Quality
  Climate
  Nature
  Forest
  Organic Chemistry
   
  

  Carbon dioxide

  Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. It is often referred to by its formula CO2. It is present in the Earth's atmosphere at a low concentration and acts ... > more
• Nuclear Energy
  Renewable Energy
  Energy and the Environment
  Weapons Technology
  Physics
  Environmental Science
   
  

  Nuclear fission

  Nuclear fission is a process in nuclear physics in which the nucleus of an atom splits into two or more smaller nuclei as fission products, and usually some by-product particles. Hence, fission is a ... > more
• Air Pollution
  Air Quality
  Pollution
  Environmental Science
  Environmental Issues
  Sports Science
   
  

  Smog

  Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke ... > more
• Renewable Energy
  Nuclear Energy
  Energy and the Environment
  Weapons Technology
  Environmental Science
  Hazardous Waste
   
  

  Nuclear power plant

  A nuclear power plant (NPP) is a thermal power station in which the heat source is one or more nuclear reactors. Nuclear power plants are base load stations, which work best when the power output is ... > more
• Aviation
  Vehicles
  Sports Science
  Engineering
  Wind Energy
  Transportation Science
   
  

  Aircraft

  An aircraft is any machine capable of atmospheric flight. A first division by design among aircraft is between lighter-than-air, aerostat, and heavier-than-air aircraft, aerodyne. Examples of ... > more
• Energy and the Environment
  Solar Energy
  Renewable Energy
  Geomagnetic Storms
  Environmental Science
  Sustainability
   
  

  Solar panel

  Solar panels are devices for capturing the energy in sunlight. The term solar panel can be applied to either solar hot water panels (usually used for providing domestic hot water) or solar ... > more
• Energy and the Environment
  Wind Energy
  Electricity
  Sustainability
  Water
  Nature of Water
   
  

  Water turbine

  A water turbine is a rotary engine that takes energy from moving water. Water turbines were developed in the nineteenth century and were widely used for industrial power prior to electrical grids. ... > more
• Wind Energy
  Renewable Energy
  Energy and the Environment
  Environmental Science
  Energy Technology
  Energy Policy
   
  

  Wind power

  Wind power is the conversion of wind energy into more useful forms, such as electricity, using wind turbines. At the end of 2006, worldwide capacity of wind-powered generators was 73.9 gigawatts; ... > more

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