Physics
Doppler Effect
Move a sound source and an observer, change the speed of sound and the wind, and watch the observed frequency shift — all the way to a supersonic Mach cone.
For teachers
Use ExScim in your classroom in minutes. No accounts, no installs — just share a link or open a simulation on the projector.
Presentation mode
Many simulations include a presentation mode with large controls, designed for projectors and smart boards.
Ready-made scenarios
Built-in scenarios (for example “approach”, “supersonic” or “dense medium”) let you jump straight to the key idea of a lesson.
Live formulas and graphs
Students see the equation update as they change a value, which makes the link between model and math visible.
Two languages
Switch between English and Persian inside the simulation — useful for bilingual classes and language learners.
A simple lesson flow
- Predict: ask students what will happen before they touch anything.
- Explore: give them five minutes of free play.
- Test: set a challenge, such as “make the observed frequency double”.
- Explain: connect their results to the formula on screen.
Have an idea for a new simulation or want to share how you use ExScim? We would love to hear from you.
Contact usFeatured simulations
PhysicsEngineering
Wave Propagation Through Materials
Send a sound or electromagnetic wave into a slab of water, glass, concrete, metal or lead and see how much is reflected, absorbed and transmitted.
PhysicsChemistry
3D Brillouin Zone & Bragg Diffraction
Build reciprocal lattices, explore 3D Brillouin zones and simulate X-ray diffraction with Bragg’s law, structure factors, band structures and peak fitting.