Matter & Energy Articles

• Sports Science
  Chemistry
  Inorganic Chemistry
  Physics
  Energy and Resources
  Graphene
   
  

  Nickel

  Nickel is a metallic chemical element in the periodic table that has the symbol Ni and atomic number 28. Nickel is a silvery white metal that takes on a high polish. It belongs to the iron group, and ... > more
• Chemistry
  Sports Science
  Inorganic Chemistry
  Materials Science
  Spintronics
  Engineering and Construction
   
  

  Chromium

  Chromium is a chemical element in the periodic table that has the symbol Cr and atomic number 24. Chromium is a steel-gray, lustrous, hard metal that takes a high polish, and has a high melting ... > more
• Nature of Water
  Sports Science
  Chemistry
  Inorganic Chemistry
  Albert Einstein
  Telecommunications
   
  

  Drag (physics)

  For a solid object moving through a fluid or gas, drag is the sum of all the aerodynamic or hydrodynamic forces in the direction of the external fluid flow. It therefore acts to oppose the motion of ... > more
• Inorganic Chemistry
  Chemistry
  Weapons Technology
  Physics
  Engineering
  Graphene
   

  Actinide

  The actinide series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table with atomic numbers 89 - 103. The actinide series is named after actinium. All ... > more
• Organic Chemistry
  Chemistry
  Inorganic Chemistry
  Spintronics
  Weapons Technology
  Alternative Fuels
   
  

  Oxidizing agent

  An oxidizing agent (also called an oxidizer or oxidant) is referred to as a chemical compound that readily transfers oxygen atoms or a substance that gains electrons in a redox chemical reaction. ... > more
• Energy Technology
  Electricity
  Optics
  Consumer Electronics
  Energy and Resources
  Graphene
   

  Electrical phenomena

  Electrical phenomena are commonplace and unusual events that can be observed which illuminate the principles of the physics of electricity and are explained by them. Electrical phenomena are a ... > more
• Thermodynamics
  Energy Technology
  Sports Science
  Energy and Resources
  Aerospace
  Physics
   
  

  Heat pump

  A heat pump is a machine which moves heat from a low temperature reservoir to a higher temperature reservoir under supply of ... > more
• Medical Technology
  Medical Devices
  Medical Imaging
  Nuclear Energy
  Brain Tumor
  Weapons Technology
   
  

  Positron emission tomography

  Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three dimensional image or map of functional processes in the body. PET is both a medical and ... > more
• Graphene
  Sports Science
  Materials Science
  Biochemistry
  Chemistry
  Physics
   
  

  Crystal structure

  In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a unit cell, a set of atoms arranged in a particular way; ... > more
• Earthquakes
  Natural Disasters
  Sports Science
  Tsunamis
  Technology
  Electronics
   
  

  Seismometer

  Seismometer are used by seismologists to measure and record seismic waves. By studying seismic waves, geologists can map the interior of the Earth, and measure and locate earthquakes and other ground ... > more

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