---
title: "Show HN: What if the speed of light was 5 km/h?"
slug: hn-49637385
published: 2026-09-10T01:58:00.000Z
indexing_status: crawled
crawl_hits: 1
crawlers: ClaudeBot
source: https://rivendell.dmitrybrant.com/relativity/
---
# Show HN: What if the speed of light was 5 km/h?

Source: [Hacker News](https://news.ycombinator.com/item?id=49637385) · score 365 · by dmitrybrant

Link: https://rivendell.dmitrybrant.com/relativity/

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