Optics Articles

• Sports Science
  Materials Science
  Inorganic Chemistry
  Chemistry
  Hurricanes and Cyclones
  Severe Weather
   
  

  Polytetrafluoroethylene

  Polytetrafluoroethylene (PTFE) is a fluoropolymer discovered by Roy J. Plunkett (1910–1994) of DuPont in 1938. It was introduced as a commercial product in 1946 and (in an example of a ... > more
• Water
  Nature of Water
  Sports Science
  Recycling and Waste
  Floods
  Thermodynamics
   
  

  Hydrogeology

  Hydrogeology is the part of hydrology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth's crust (commonly in ... > more
• Materials Science
  Civil Engineering
  Chemistry
  Engineering and Construction
  Inorganic Chemistry
  Physics
   
  

  Materials science

  Materials science is an interdisciplinary field involving the properties of matter and its applications to various areas of science and engineering. It includes elements of applied physics and ... > more
• Nature of Water
  Physics
  Astrophysics
  Quantum Physics
  Thermodynamics
  Dark Matter
   
  

  Phase (matter)

  A phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i.e. density, crystal structure, index of refraction, and so ... > more
• Engineering
  Technology
  Sports Science
  Medical Technology
  Engineering and Construction
  Information Technology
   
  

  Technology

  Technology is a broad term dealing with the use and knowledge of humanity's tools and crafts. For scientists and engineers, technologies are: conceptual tools - as methods, methodologies, techniques; ... > more
• Engineering
  Civil Engineering
  Engineering and Construction
  Energy Technology
  Textiles and Clothing
  Thermodynamics
   
  

  Machine

  A machine is any mechanical or organic device that transmits or modifies energy to perform or assist in the performance of tasks. It normally requires some energy source and accomplishes some sort of ... > more
• Sports Science
  Ancient Civilizations
  Construction
  Anthropology
  Robotics Research
  Weapons Technology
   
  

  Trebuchet

  A trebuchet, also sometimes called a trebucket is a medieval siege engine, a weapon employed either to batter masonry or to throw projectiles over walls. The invention of the trebuchet derives, no ... > more
• Climate
  Global Warming
  Renewable Energy
  Sports Science
  Petroleum
  Energy and Resources
   
  

  Methane

  Methane is a significant and plentiful fuel which is the principal component of natural gas. Burning one molecule of methane in the presence of oxygen releases one molecule of CO2 (carbon dioxide) ... > more
• Osteoporosis
  Women's Health
  Food Additives
  Dietary Supplements and Minerals
  Vitamin
  Nutrition
   
  

  Calcium

  Calcium is a chemical element in the periodic table that has the symbol Ca and atomic number 20. Calcium is a soft grey alkaline earth metal that is used as a reducing agent in the extraction of ... > more
• Weapons Technology
  Nuclear Energy
  Engineering
  Sports Science
  Energy Policy
  Engineering and Construction
   
  

  Weapons of mass destruction

  Weapon of mass destruction (WMD) is a term used to describe a munition with the capacity to indiscriminately kill large numbers of living beings. The phrase broadly encompasses several areas of ... > more

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