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• a  relating or subject to the special or the general theory of relativity
  relativistic quantum mechanics
  relativistic increase in mass
  radiation from relativistic particles
• a  of or relating to the philosophical doctrine of relativism

• Be cause of other relativistic effects that stem from leaving and returning to earth, if one twin departs on a high-velocity space journey, he will be younger than the earth-bound .
• Tom Hanks is not so lucky: he must represent relativistic contemporary values to Friday.
• The answer to that question depends on whether the observed effects were due to absolute motion through an ether, or to relativistic motion, the motion of the particles relative .

News & Articles

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• Cosmic radio bursts point to cataclysmic origins
  Mysterious bursts of radio waves originating from billions of light years away have left the scientists who detected them speculating about their origins. The burst energetics indicate that they originate from an extreme astrophysical event involving relativistic objects such as neutron stars or black holes.
  July 5, 2013 - Science Daily