Definition

1. Noun:
   • (Physics) An imaginary surface joining all points in space that are reached at the same instant by a wave propagating through a medium. This is a conceptual surface representing the leading edge or a specific phase (like a peak) of a wave as it travels.
   • All the points just reached by a wave as it propagates. This refers to the continuous set of points that form the advancing boundary of the wave disturbance.

Usage Examples

• Noun:
  • The wave front of the sound pulse was measured to be perfectly spherical.
  • As the ripple spread across the pond, the circular wave front expanded outward.
  • Opticians study how the shape of a light wave front changes when it passes through a lens.

Advanced Usage

• "Plane wave front": A wave front where all points lie on a flat, planar surface, indicating the wave is traveling in a single direction without spreading.
  • Laser light often approximates a plane wave front.
• "Spherical wave front": A wave front where all points lie on the surface of a sphere, indicating the wave is emanating from a point source.
  • The sound from the explosion produced a spherical wave front.

Variants and Related Words

• Wavefront (noun): A common alternative spelling, often written as one word.
  • The adaptive mirror corrected the distortions in the incoming wavefront.
• Wave surface (noun): A related term sometimes used synonymously with wave front.

Synonyms

• Wave surface
• Phase front

Related Concepts (Not Phrasal Verbs or Idioms)

• Huygens' principle: A theory that explains wave propagation by considering every point on a wave front as a source of secondary wavelets.
• Diffraction: The bending of waves around obstacles, which is analyzed by considering the behavior of the wave front.

Noun

1. (physics) an imaginary surface joining all points in space that are reached at the same instant by a wave propagating through a medium
2. all the points just reached by a wave as it propagates