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• Transportation Science
  Sports Science
  Detectors
  Physics
  Solar Energy
  Optics
   
  

  Navigation

  There are several traditions of navigation. In the pre-modern history of human migration and discovery of new lands by navigating the oceans, a few peoples have excelled as sea-faring ... > more
• Quantum Physics
  Physics
  Chemistry
  Inorganic Chemistry
  Graphene
  Cosmic Rays
   
  

  Atom

  In chemistry and physics, an atom is the smallest particle of a chemical element that retains its chemical properties. An atom consists of a dense nucleus of positively-charged protons and ... > more
• Tsunamis
  Natural Disasters
  Construction
  Civil Engineering
  Earthquakes
  Sports Science
   
  

  Tsunami

  A tsunami is a series of waves generated when water in a lake or the sea is rapidly displaced on a massive scale. Earthquakes, landslides, volcanic eruptions and large meteorite impacts all have the ... > more
• Air Pollution
  Acid Rain
  Geochemistry
  Organic Chemistry
  Soil Types
  Organic
   
  

  Nitrogen

  Nitrogen is the chemical element in the periodic table that has the symbol N and atomic number 7. Nitrogen constitutes 78 percent of Earth's atmosphere and is a constituent of all living tissues. ... > more
• Acid Rain
  Pollution
  Air Pollution
  Organic Chemistry
  Biochemistry
  Environmental Issues
   
  

  Acid

  An acid (often represented by the generic formula HA) is traditionally considered any chemical compound that, when dissolved in water, gives a solution with a pH of less than 7.0. That approximates ... > more
• Nanotechnology
  Materials Science
  Physics
  Sports Science
  Graphene
  Spintronics
   
  

  Nanoparticle

  A nanoparticle (or nanopowder or nanocluster or nanocrystal) is a microscopic particle with at least one dimension less than 100 nm. Nanoparticle research is currently an area of intense scientific ... > more
• Electronics
  Sports Science
  Materials Science
  Optics
  Nature of Water
  Chemistry
   
  

  Glass

  The materials definition of a glass is a uniform amorphous solid material, usually produced when a suitably viscous molten material cools very rapidly. Naturally occurring glass, such as obsidian, ... > more
• Optics
  Physics
  Quantum Physics
  Inorganic Chemistry
  Albert Einstein
  Graphene
   
  

  Light

  Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context, electromagnetic radiation of any ... > more
• Fuel Cells
  Alternative Fuels
  Air Quality
  Organic Chemistry
  Fossil Fuels
  Energy and the Environment
   
  

  Methanol

  Methanol, also known as methyl alcohol or wood alcohol, is a chemical compound with chemical formula CH3OH. It is the simplest alcohol, and is a light, volatile, colourless, tasteless, flammable, ... > 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
• Chemistry
  Inorganic Chemistry
  Sports Science
  Graphene
  Materials Science
  Organic Chemistry
   
  

  Titanium

  Titanium is a chemical element in the periodic table that has the symbol Ti and atomic number 22. It is a light, strong, lustrous, corrosion-resistant (including resistance to sea water and chlorine) ... > more

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