Ripple Tank Simulation

Falstad's Ripple Tank Simulation turns a familiar classroom water tray into a changeable two-dimensional wave field. Start with an example, sketch into the space, and use the moving pattern to get a feel for interference, diffraction, refraction, resonance, and other wave behavior that can be stubborn on a chalkboard.

What is Ripple Tank Simulation?

A physical ripple tank is excellent at making waves visible and terrible at fitting in a browser tab. This simulation keeps the useful part: a live two-dimensional field where a setup can be changed faster than a real tank can settle. The destination itself points newcomers toward prepared examples, then invites them to draw in the field and offers a separate 3-D view for another angle on the pattern. Falstad's own physics-app collection frames the tool as a way to visualize concepts across math, physics, and engineering, and ComPADRE independently catalogs it as a freely accessible introductory-physics resource by Paul Falstad. That makes it a strong companion for a class discussion or an “what happens if?” detour. The simulation canvas was not operated during this pass, so it is wiser to treat it as a conceptual playground than as a confirmed numerical instrument. Start with one clean setup, make one change, and watch the ripples argue back.

What you can do there

• Open a wave example
• Draw waves and barriers
• Inspect a three-dimensional view

Why we picked it

It gives abstract wave vocabulary somewhere to move. A slit, a source, and a barrier become visible causes instead of terms that have to be memorized, which is exactly the sort of small interactive advantage a browser can offer.

How to get the most from it

Begin with an Example menu setup before drawing your own waves or obstacles. Change one variable at a time, watch the pattern settle, then compare it with the next setup. Use the 3-D view as a second look rather than trying to learn every control at once.

Good to know

The live canvas, 3-D mode, and controls were not exercised in this safe research pass, so actual performance and input behavior are unknown. The site presents a simulation for understanding patterns, not a substitute for checking experimental measurements or course-specific conventions.

Who made it, and when?

Paul Falstad is the credited creator or organization.