travelling wave

Thân thiện

A travelling wave moves across the surface of a calm lake.

Definition

1. Noun:
   • A wave in which the medium moves in the direction of propagation of the wave: A travelling wave is a type of wave where the disturbance or energy travels through the medium, causing the particles of the medium to oscillate and transfer energy from one location to another in the direction the wave is moving.

Usage

• The term "travelling wave" is used primarily in physics and engineering to describe waves that transport energy, such as sound waves in air or waves on a string. It contrasts with a "standing wave," where the energy is confined and does not appear to travel.
• It is typically used as a compound noun. The single-word form "travellingwave" is not standard; the term is almost always written as two separate words or with a hyphen: "travelling-wave."

Examples

• Noun:
  • The earthquake generated a powerful travelling wave that moved through the Earth's crust.
  • In this experiment, we will measure the speed of a travelling wave on a stretched rope.
  • Sound is a classic example of a longitudinal travelling wave.

Advanced Usage

• Mathematical Representation: A travelling wave is often described by a function of the form f(x - vt) or f(x + vt), where 'v' is the wave speed. The sign indicates the direction of travel.
• "Travelling wave solution": A specific solution to a wave equation that represents a wave of permanent form moving at a constant velocity.
  • The researchers found a novel travelling wave solution to the nonlinear partial differential equation.

Variants and Related Words

• Traveling wave (noun): The American English spelling of "travelling wave."
• Progressive wave (noun): A synonym for travelling wave, commonly used in British English contexts.
• Wave propagation (noun phrase): The movement of waves through a medium.
• Standing wave (noun): The opposite phenomenon, where the wave oscillates in time but its peak amplitude profile does not move in space.

Synonyms

• Progressive wave: A wave that advances through a medium.
• Propagating wave: A wave that is in the process of moving through space.

Related Phrases

• Travelling wave tube (noun phrase): An electronic device used to amplify radio frequency signals, which utilizes the principle of a travelling wave.
  • The satellite communication system uses a travelling wave tube for signal amplification.
• Travelling wave antenna (noun phrase): An antenna designed to have a travelling wave of current along its length.

Học thuật

Noun

1. a wave in which the medium moves in the direction of propagation of the wave

Từ đồng nghĩa

• traveling wave