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• 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
• Spintronics
  Physics
  Electricity
  Quantum Physics
  Cosmic Rays
  Materials Science
   
  

  Electron

  The Electron is a fundamental subatomic particle that carries an electric charge. It is a spin-half lepton that participates in electromagnetic interactions, and its mass is less than one thousandth ... > more
• Ultrasound
  Medical Imaging
  Medical Technology
  Pregnancy and Childbirth
  Sports Science
  Detectors
   
  

  Ultrasound

  Ultrasound is sound with a frequency greater than the upper limit of human hearing, approximately 20 kilohertz (20,000 hertz). Some animals, such as dogs, dolphins, bats, and mice have an upper limit ... > more
• Jupiter
  Satellites
  Sports Science
  Physics
  Astronomy
  Solar System
   
  

  Galileo Galilei

  Galileo Galilei (Pisa, February 15, 1564 to January 8, 1642), was an Italian physicist, astronomer, and philosopher who is closely associated with the scientific revolution. He has been referred to ... > more
• Sports Science
  Physics
  Quantum Physics
  Nuclear Energy
  Albert Einstein
  Energy Technology
   
  

  Momentum

  In physics, momentum is the product of the mass and velocity of an object. Momentum has the special property that, in a closed system, it is always conserved, even in ... > more
• Biometric
  Healthy Aging
  Forensic Research
  Forensics
  Attention Deficit Disorder
  Sports Science
   
  

  Fingerprint

  A fingerprint is an impression of the friction ridges of all or any part of the finger. A friction ridge is a raised portion of the epidermis on the palmar (palm and fingers) or plantar (sole and ... > more
• Healthy Aging
  Sports Science
  Sports Medicine
  Attention Deficit Disorder
  Mathematics
  Physics
   
  

  Scientific method

  Scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. It is based on gathering observable, empirical and ... > more
• Biology
  Physics
  Engineering
  Chemistry
  Forensic Research
  Civil Engineering
   
  

  Science

  Science refers to the system of acquiring knowledge based on empiricism, experimentation, and methodological naturalism. The term science also refers to the organized body of knowledge humans have ... > more
• Nature of Water
  Thermodynamics
  Sports Science
  Chemistry
  Inorganic Chemistry
  Physics
   
  

  Pressure

  Pressure (symbol: p) is the force per unit area acting on a surface in a direction perpendicular to that surface. Pressure is transmitted to solid boundaries or across arbitrary sections of fluid ... > more
• Nature of Water
  Thermodynamics
  Sports Science
  Water
  Physics
  Environmental Science
   
  

  Evaporation

  Evaporation is one of the two forms of vaporization. It is the process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the ... > more

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