Organic Chemistry Articles

• Optics
  Physics
  Quantum Physics
  Medical Technology
  Energy Technology
  Sports Science
   
  

  Electromagnetic radiation

  Electromagnetic radiation is a propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of ... > more
• Spintronics
  Quantum Physics
  Physics
  Quantum Computing
  Graphene
  Materials Science
   
  

  Spin (physics)

  In physics, spin refers to the angular momentum intrinsic to a body, as opposed to orbital angular momentum, which is generated by the motion of its center of mass about an external ... > 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
• Ultrasound
  Medical Imaging
  Medical Technology
  Pregnancy and Childbirth
  Sports Science
  Detectors
   
  

  Ultrasound

  Ultrasound is sound with a frequency greater than the upper limit of human hearing, approximately 20 kilohertz (20,000 hertz). Some animals, such as dogs, dolphins, bats, and mice have an upper limit ... > more
• Nature of Water
  Sports Science
  Thermodynamics
  Inorganic Chemistry
  Chemistry
  Energy Policy
   
  

  Volume

  Volume, also called capacity, is a quantification of how much space an object occupies. The international unit for volume is the cubic ... > more
• Thermodynamics
  Physics
  Sports Science
  Nature of Water
  Solar Energy
  Quantum Physics
   
  

  Entropy

  In thermodynamics, entropy is an extensive state function that accounts for the effects of irreversibility in thermodynamic systems, particularly in heat engines during an engine cycle. While the ... > more
• Nature of Water
  Sports Science
  Vehicles
  Electronics
  Nanotechnology
  Inorganic Chemistry
   
  

  Flow measurement

  Flow measurement is the quantification of bulk fluid or gas movement. Volumetric flow rate is sometimes measured in "standard cubic centimeters per minute" (abbreviation sccm), a unit acceptable for ... > more
• Spintronics
  Sports Science
  Physics
  Energy Technology
  Solar Energy
  Electricity
   
  

  Torque

  In physics, torque can informally be thought of as "rotational force" or "angular force" which causes a change in rotational motion. This force is defined by linear force multiplied by a radius. The ... > more
• Wind Energy
  Energy and the Environment
  Renewable Energy
  Electricity
  Environmental Science
  Energy Technology
   
  

  Wind turbine

  A wind turbine is a machine for converting the mechanical energy in wind into electrical energy. If the mechanical energy is used directly by machinery, such as a pump or grinding stones, the machine ... > 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

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