Vehicle Articles

• Energy and the Environment
  Renewable Energy
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  Fuel Cells
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  Liquid nitrogen economy

  A liquid nitrogen economy is a hypothetical proposal for a future economy in which the primary form of energy storage and transport is liquid nitrogen. It is proposed as an alternative to liquid ... > more
• Air Quality
  Air Pollution
  Pollution
  Petroleum
  Environmental Science
  Vehicles
   

  Automobile emissions control

  Automobile emissions control covers all the technologies that are employed to reduce the air pollution-causing emissions produced by ... > more
• Aviation
  Vehicles
  Fuel Cells
  Fossil Fuels
  Petroleum
  Alternative Fuels
   
  

  Internal combustion engine

  The internal combustion engine is a heat engine in which combustion occurs in a confined space called a combustion chamber. Combustion of a fuel creates high temperature/pressure gases, which are ... > more
• Solar Energy
  Energy Policy
  Energy Technology
  Wind Energy
  Petroleum
  Alternative Fuels
   
  

  Biomass

  Biomass is organic non-fossil material, collectively. In other words, 'biomass' describes the mass of all biological organisms, dead or alive, excluding biological mass that has been transformed by ... > more
• Aviation
  Vehicles
  Fuel Cells
  Fossil Fuels
  Quantum Physics
  Sports Science
   
  

  Jet engine

  A jet engine is any engine that accelerates and discharges a fast moving jet of fluid to generate thrust in accordance with Newton's third law of ... > more
• Aviation
  Vehicles
  Sports Science
  Nature of Water
  Construction
  Nuclear Energy
   
  

  Seaplane

  A seaplane is an aircraft designed to take off and land (correctly, though less commonly termed, "alight") upon water. There are two types of seaplane: the floatplane and the flying boat. A ... > more
• Weapons Technology
  Sports Science
  Aviation
  Nuclear Energy
  Vehicles
  Optics
   

  Projectile

  A projectile is any object sent through space by the application of a force. In a general sense, even a football or baseball may be considered a projectile, but in practice most projectiles are ... > more
• Aviation
  Vehicles
  Sports Science
  Wind Energy
  Construction
  Weapons Technology
   
  

  Helicopter

  A helicopter is an aircraft which is lifted and propelled by one or more horizontal rotors (propellers). Helicopters are classified as rotary-wing aircraft to distinguish them from conventional ... > more
• Alternative Fuels
  Fossil Fuels
  Fuel Cells
  Nature of Water
  Sports Science
  Petroleum
   

  Propellant

  A propellant is a material that is used to move an object by applying a motive force. This may or may not involve a chemical reaction. It may be a gas, liquid, plasma, or, before the chemical ... > more
• Aviation
  Vehicles
  Sports Science
  Weather
  Geography
  Air Quality
   
  

  Altimeter

  An altimeter is an active instrument used to measure the altitude of an object above a fixed level. The measurement of altitude is called altimetry, which is related to the term bathymetry, the ... > more

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