In Our Time

Gravitational Waves

May 17, 2007
Scientists delve into the world of Gravitational Waves, discussing their elusive nature, connection to Einstein's theories, and potential to reveal cosmic secrets. They explore the challenges of detecting these cosmic ripples, their impact on our understanding of the universe, and the technologies involved in their detection.
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INSIGHT

Einstein's Gravity Revolution

  • Einstein changed gravity from a force to a curvature of space and time.
  • This was a radical shift from Newton's instantaneous force view.
INSIGHT

Origins of Gravitational Waves

  • Gravitational waves arise from accelerating massive objects in asymmetrical motion.
  • These waves distort the fabric of space-time as they propagate.
ANECDOTE

Binary Pulsar’s Gravitational Proof

  • In 1974, observations of a binary pulsar system showed orbital decay.
  • This matched predictions that energy is lost via gravitational waves, providing indirect evidence.
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