• CanadaPlus@lemmy.sdf.org
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    15 days ago

    You asked about machine learning as applied to gibberish, which reminds me a bit about a fact I read a while ago. Someone asked why barns in the US are often red. In fact, they’re not red at all, but simply have a natural velocity moving away from the viewer, and become reddish-tinged due to the Doppler effect.

    This high speed also dilates, so even if a barn was built 100 years ago, you might be seeing it as it was 300 years ago, and produces a strong length contraction. This is why barns often also look so old, and why at some angles they can look curved, like this.

    The phenomenon was also highlighted in the famous “ladder in a barn” paradox, which has been successfully demonstrated using real barns.