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Show HN: What if the speed of light was 5 km/h?

The author created a visualization to demonstrate relativistic effects by scaling down the speed of light to 5 km/h, allowing everyday objects to illustrate these phenomena.

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Tracking sinceSeptember 14, 2026627 source points
Momentum0/hover 1.02 h
Discussion287Read comments ↗
PublishedSeptember 10, 2026dmitrybrant
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627 source points

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WHY IT MAY MATTER

This visualization helps make complex physics concepts more accessible by relating them to everyday experiences.

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