Table of Contents

## How do you calculate the phase speed of a wave?

x c r e s t = ( ω / k ) t + 2 n π / k . is known as the phase speed because it specifies the travel speed of constant-phase wave features, like wave crests or troughs. Although instructive, (8.1) and (8.2) are limited to propagation in the positive-x direction only. In general, waves may propagate in any direction.

What is the speed of a wave function?

Thus, given the frequency and wave number of a wave function, we can determine the speed of the particle from the phase velocity of its wave function, v = 2vp.

### Is wave speed the same as phase speed?

Wave velocity, when not otherwise specified, usually means the phase velocity: the rate at which the phase travels in space. This site animates the differences between phase and group velocities. The group velocity is the speed at which energy is transported.

What is the phase velocity of a particle wave?

The phase velocity of a wave is the rate at which the wave propagates in any medium. This is the velocity at which the phase of any one frequency component of the wave travels. For such a component, any given phase of the wave (for example, the crest) will appear to travel at the phase velocity.

#### What is K in wave function?

k is the wavenumber. 𝜆 is the wavelength of the wave.

Why phase velocity and wave velocity is equal?

Waves can be in the group and such groups are called wave packets, so the velocity with a wave packet travels is called group velocity. The velocity with which the phase of a wave travels is called phase velocity. The relation between group velocity and phase velocity are proportionate.

## How do you find the phase velocity of a de Broglie wavelength?

We can easily calculate a velocity for de Broglie waves. Beiser calls it “vp,” and later shows that vp is the phase velocity of the waves. A wave velocity is given by vp=fλ. De Broglie postulated that λ=h/mv for particles as well as waves.

Why wave velocity is called phase velocity?

Waves can be in the group and such groups are called wave packets, so the velocity with a wave packet travels is called group velocity. The velocity with which the phase of a wave travels is called phase velocity.