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Premium experiment • traveling-wave lab

PHYSICS • WAVES

Wave Generator

Inspect a traveling transverse wave as both a moving shape and a field of oscillating particles. Compare wave trains, scrub phase and tune frequency × wavelength to a target speed.

● LIVE WAVE FIELDtraveling right
0.000 s
Wave speed3.60 m/s
Period0.833 s
Reference speed3.60 m/s
Target error0.00 m/s
Max particle speed7.54 m/s
Phase velocity3.60 m/s

Probe diagnostics

displacement versus time

Separate wave motion from particle motion

The wave pattern moves horizontally with phase speed v = fλ while each marked particle oscillates vertically. The probe makes that distinction measurable rather than merely visual.

Fast investigations

  1. Double frequency while holding wavelength fixed and measure the new phase speed.
  2. Keep speed constant by changing frequency and wavelength inversely.
  3. Use the reference train to compare two waves with the same speed but different spacing.
  4. Scrub one period and watch a fixed particle complete one full oscillation.

LEARN WITH THE SIMULATION

Understand Wave Generator by experimenting.

START HERE

A traveling wave carries a repeating disturbance through space. Amplitude controls displacement size, frequency counts oscillations per second, and wavelength measures the spatial distance between repeating points.

BUILD THE IDEA

What you should understand first

  • Use v = fλ to connect speed, frequency and wavelength.
  • Separate amplitude from frequency.
  • Recognize period as the reciprocal of frequency.

TRY IT YOURSELF

If wave speed is fixed, what must happen to wavelength when frequency doubles?

  1. Record frequency and wavelength.
  2. Double frequency while observing wave speed.
  3. Adjust wavelength until the original speed is restored.
Read the visual:

For fixed speed, doubling frequency requires halving wavelength.

WHY IT WORKS 01

Use v = fλ to connect speed, frequency and wavelength.

The relationship v = fλ couples space and time. Frequency counts how many oscillations pass a point each second, while wavelength is the distance between repeating phase points. If the medium fixes wave speed, changing frequency cannot independently leave wavelength unchanged: increasing frequency forces the spatial spacing between crests to shrink so their product remains the same propagation speed.

WHY IT WORKS 02

Separate amplitude from frequency.

Amplitude changes the size of the displacement, but in an ideal linear wave it does not determine how quickly the disturbance travels through the medium. That distinction matters because a taller-looking wave is not automatically a faster one. Use the simulation to separate propagation speed from oscillation rate and from the amount of energy associated with the disturbance.

DO NOT MIX THESE UP

Common misconception

Amplitude does not determine frequency. Frequency and wavelength are not independent when wave speed is fixed. A snapshot of a wave in space is different from one point oscillating in time.

PRACTICE CHALLENGE

If wave speed is fixed, what must happen to wavelength when frequency doubles?

  • Record frequency and wavelength.
  • Double frequency while observing wave speed.
  • Adjust wavelength until the original speed is restored.
Reveal the reasoning

For fixed speed, doubling frequency requires halving wavelength. Amplitude does not determine frequency. Frequency and wavelength are not independent when wave speed is fixed. A snapshot of a wave in space is different from one point oscillating in time.

MODEL BOUNDARIES

What this simulation assumes

Every simulation simplifies reality or a mathematical system. These are the assumptions and limits to keep in mind while interpreting the results.

Model assumptions

  • The wave is represented by an ideal sinusoidal disturbance.
  • Wave speed and medium properties are uniform across the displayed region.
  • The source is coherent and boundary losses are neglected.

Model limitations

  • Real waves can disperse, attenuate and become nonlinear.
  • The visualization is a simplified one-dimensional representation of a wave field.

CONNECT IT

Where this matters

  • Sound and acoustics
  • Radio and communication signals
  • Water and seismic waves

WORDS THAT MATTER

Key vocabulary

Frequency
Cycles completed per second.
Wavelength
Distance between equivalent phase points.
Wave speed
Propagation speed of the disturbance.