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The Sundial Cannon of Åtvidaberg (2017)

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71 points choult | 1 comments | 15 Oct 24 18:28 UTC | HN request time: 0s | source
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matsemann ◴[15 Oct 24 20:11 UTC] No.41852608[source]▶
But the sun isn't always at the same place at noon? So how is the magnifying glass aimed?
replies(2): >>41852948 #>>41855456 #
1. perilunar ◴[16 Oct 24 03:56 UTC] No.41855456[source]▶
Same azimuth, different altitude. You could adjust the altitude angle daily, or just set the fuse along the north-south axis, and it will be lit in a slightly different place each day.