Definition

1. Noun:
   • (physics) A wave that is hypothesized to propagate gravity and to travel at the speed of light: A "gravitation wave" is a theoretical ripple in the fabric of spacetime, predicted by Einstein's theory of general relativity. It is a disturbance that carries gravitational energy and information across the universe.

Usage Examples

• Noun:
  • Scientists are searching for direct evidence of a gravitation wave.
  • The theory predicts that a massive object accelerating through space would emit a gravitation wave.

Advanced Usage

• "detection of a gravitation wave": Refers to the act or process of observing and confirming the existence of these waves.
  • The detection of a gravitation wave would be a monumental achievement for physics.

Variants and Related Words

• Gravitational wave: This is the more common and standard term for the same phenomenon. "Gravitation wave" is a less frequent variant.
  • The Laser Interferometer Gravitational-Wave Observatory (LIGO) was built to detect gravitational waves.

Synonyms

• Gravity wave: In a strict physics context, this can be a synonym, though in other scientific fields (like fluid dynamics), "gravity wave" has a completely different meaning.
• Spacetime ripple: A descriptive, non-technical synonym.

Related Phrases

• Gravitational wave astronomy: The field of astronomy using gravitational waves to observe the universe.
  • Gravitational wave astronomy opens a new window to observe cosmic events.

Notes on Meaning

• Important Distinction: The term "gravitation wave" is essentially synonymous with the modern term "gravitational wave". The latter is the term overwhelmingly used in contemporary scientific literature and news following their direct detection in 2015. "Gravitation wave" is an older or variant form.
• Not to be confused with "gravity waves" in fluid dynamics, which are waves in a fluid medium where gravity is the restoring force (e.g., ocean waves).

Noun

1. (physics) a wave that is hypothesized to propagate gravity and to travel at the speed of light