Interactive Tool Visualizes Relativity by Slowing Light to Walking Speed

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A developer has released an interactive visualization that scales the speed of light down to 5 km/h, roughly equivalent to a human walking pace. The project aims to make relativistic effects — such as time dilation and length contraction — intuitively understandable using everyday scenarios. The tool represents a first version, shared publicly by its creator on Hacker News. It received 16 upvotes and sparked a small discussion thread among users interested in physics education and visualization.

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