Relativity Park: Walking Speed of Light

Experience special relativity effects at walking speed in an interactive simulator.

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28 ratings4.25

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CategoryEducation

PlatformWeb

PricingFree

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Relativity Park is an interactive simulator that visualizes special relativity effects—such as Lorentz contraction, time dilation, Doppler shift, aberration, and relativistic beaming—at a drastically slowed speed of light of 5 km/h. Users can control movement and observe physically accurate relativistic phenomena in a virtual environment.

special relativitysimulationphysicsscience educationinteractiveDoppler shifttime dilationLorentz contraction

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4.25

28 reviews

Product

4.75

Design & Polish

4.25

Performance

3.75

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Anonymous reviewer

9/14/2026

This is most convincing as a visual thought experiment, not as a literal picture of extreme physics. The strength is that it lets you compare several relativistic effects in one place and turn them on and off without hiding the simplifications.