Java Physics


L wave 1

Longitudinal Traveling Wave 1



Internal Links :

Longitudinal Traveling Wave with graphs of pressure variation shown (Applet)

Longitudinal Traveling Wave 2 (Applet)

Transverse Traveling Wave (Applet)

Traveling waves and Standing waves (Applet)

Run Applet Online

Run on Java-enabled web browsers by adding the URL in the Exception Site List in your
Java Control Panel settings. But, whenever you do this, you must ensure the site is safe.
(Web Safety Checker: Scamadviser, Norton, Sucuri, Google).

Download Executable Jar File

Run outside of the browser by pressing 'Enter' or double-clicking the Jar file

Html5 Version

  • It is wrong to think the centers of compressions / rarefactions of a longitudinal traveling wave are the counterparts of the crests/ troughs of a transverse traveling wave. They are not because the displacements of the particles at the former are zero while those at the latter displace from thier equilibrium positions the most.
  • Besides, particles at centers of compressions (rarefactions) have the greatest speed, and moving in the same (opposite) direction of the wave propagation. Particles at the crests / troughs of a transverse traveling wave are momentarily at rest.
  • Actually, the compressions / rarefactions of a longitudinal wave correspond to the two "steepest hillsides" of a transerse wave.
  • In the figure below, the direction to the right (left) in the longitudinal wave is transformed to upward (downward) direction in the tansverse wave.

    L wave




Author and Copyright:

Chiu-king Ng

Feedback/Contact:, where XY is the prime number following 23

Mirror Site:

Last Update:


Java logo