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• Sports Science
  Mathematics
  Albert Einstein
  Computer Graphics
  Math Puzzles
  Mathematical Modeling
   
  

  Knot theory

  Knot theory is the mathematical branch of topology that studies mathematical knots, which are defined as embeddings of a circle in 3-dimensional Euclidean space, R3. This is basically equivalent to a ... > more
• Sports Science
  Physics
  Chemistry
  Inorganic Chemistry
  Nuclear Energy
  Materials Science
   
  

  Hafnium

  Hafnium is a chemical element in the periodic table that has the symbol Hf and atomic number 72. A lustrous, silvery gray tetravalent transition metal, hafnium resembles zirconium chemically and is ... > more
• Early Climate
  Ice Ages
  Climate
  Global Warming
  Nature of Water
  Snow and Avalanches
   
  

  Ice core

  An ice core is a core sample from the accumulation of snow and ice over many years that have recrystallized and have trapped air bubbles from previous time periods. The composition of these ice ... > more
• Electricity
  Energy Technology
  Solar Energy
  Batteries
  Consumer Electronics
  Wind Energy
   
  

  Three-phase electric power

  Three-phase is a common method of electric power transmission. It is a type of polyphase system used to power motors and many other devices. Three phase has properties that make it very desirable in ... > more
• Albert Einstein
  Black Holes
  Physics
  Quantum Physics
  Cosmology
  Sports Science
   
  

  General relativity

  General relativity (GR) is the geometrical theory of gravitation published by Albert Einstein in 1915. It unifies special relativity and Sir Isaac Newton's law of universal gravitation with the ... > more
• Nanotechnology
  Physics
  Technology
  Spintronics
  Graphene
  Quantum Physics
   
  

  Nanowire

  A nanowire is a wire of dimensions of the order of a nanometer (10−9 meters). Alternatively, nanowires can be defined as structures that have a lateral size constrained to tens of nanometers or ... > more
• Spintronics
  Physics
  Graphene
  Sports Science
  Quantum Physics
  Inorganic Chemistry
   
  

  Electron configuration

  In atomic physics and quantum chemistry, the electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure (e.g., a crystal). Like other elementary ... > more
• Sports Science
  Nature of Water
  Energy and Resources
  Detectors
  Weapons Technology
  Chemistry
   
  

  Dynamite

  Dynamite is an explosive based on the explosive potential of nitroglycerin using diatomaceous earth as an adsorbent. It is usually sold in the form of a stick roughly eight inches (20 cm) long and ... > more
• Vitamin C
  Chemistry
  Healthy Aging
  Attention Deficit Disorder
  Organic Chemistry
  Sports Medicine
   
  

  Linus Pauling

  Linus Carl Pauling (February 28, 1901 - August 19, 1994) was an American quantum chemist and biochemist. He is widely regarded as the premier chemist of the twentieth century. Pauling pioneered the ... > more
• Nuclear Energy
  Weapons Technology
  Energy and the Environment
  Renewable Energy
  Sports Science
  Physics
   
  

  Plutonium

  Plutonium is a radioactive, metallic, chemical element. It has the symbol Pu and the atomic number 94. It is the element used in most modern nuclear weapons. The most important, albeit not most ... > more

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