Matter & Energy Articles

• Optics
  Energy Technology
  Sports Science
  Construction
  Petroleum
  Physics
   
  

  Lighting

  Lighting refers to either artificial light sources such as lamps or to natural illumination of interiors from sunlight. Lighting represents a major component of energy consumption, accounting for ... > more
• Weapons Technology
  Renewable Energy
  Energy and the Environment
  Physics
  Nuclear Energy
  Geomagnetic Storms
   
  

  Radioactive decay

  Radioactive decay is the set of various processes by which unstable atomic nuclei (nuclides) emit subatomic particles (radiation). Decay is said to occur in the parent nucleus and produces a daughter ... > more
• Chemistry
  Sports Science
  Inorganic Chemistry
  Organic Chemistry
  Biochemistry
  Nature of Water
   
  

  Ethylene

  Ethylene (or IUPAC name ethene) is the simplest alkene hydrocarbon, consisting of four hydrogen atoms and two carbon atoms connected by a double bond. Because it contains a double bond, ethylene is ... > more
• Nature of Water
  Inorganic Chemistry
  Chemistry
  Sports Science
  Physics
  Thermodynamics
   
  

  Friction

  Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. It is also the contact of two objects creating static electricity. It is not, however, a ... > more
• Alternative Fuels
  Chemistry
  Organic Chemistry
  Inorganic Chemistry
  Sports Science
  Vehicles
   
  

  Hydrogen chloride

  Hydrogen chloride, also known under the name HCl, is a highly corrosive and toxic colorless gas that forms white fumes on contact with ... > more
• Energy and the Environment
  Renewable Energy
  Physics
  Energy Technology
  Solar Energy
  Environmental Science
   
  

  Radiant energy

  Radiant energy is the energy of electromagnetic waves. The term is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also used less frequently in other fields ... > more
• Physics
  Engineering
  Chemistry
  Sports Science
  Forensic Research
  Civil Engineering
   
  

  Science

  Science, in the broadest sense, refers to any systematic knowledge or practice. In a more restricted sense, science refers to a system of acquiring knowledge based on the scientific method, as well ... > more
• Quantum Physics
  Physics
  Optics
  Albert Einstein
  Sports Science
  Graphene
   
  

  Wave-particle duality

  In physics and chemistry, wave-particle duality holds that light and matter exhibit properties of both waves and of particles. A central concept of quantum mechanics, duality addresses the inadequacy ... > more
• Transportation Science
  Civil Engineering
  Engineering
  Energy Technology
  Electronics
  Nature of Water
   

  Traffic engineering (transportation)

  Traffic engineering is a branch of civil engineering that uses engineering techniques to achieve the safe and efficient movement of people and goods. It focuses mainly on research and construction of ... > more
• Batteries
  Electricity
  Energy and the Environment
  Energy Technology
  Vehicles
  Sports Science
   
  

  Battery electric vehicle

  A battery electric vehicle (BEV) is an electric vehicle that utilises chemical energy that is stored in rechargeable battery packs. Electric vehicles use electric motors instead of, or in addition ... > more

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