Edit: lol yeah, I deserve this, I teed it up rather magnificently.

  • 56!@lemmy.ml
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    4 months ago

    Inside the fresnel lens of a lighthouse. (The tallest land-based lighthouse in the UK)

    Perspective from inside a 16 sided fresnel lense, with 2 light bulbs visible

    Perspective from outside showing the wavy shape of the glass

      • 56!@lemmy.ml
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        4 months ago

        Well… I’ve tried to find out just now. Most taller lighthouses are on small rocks in the sea. On some the lighthouse covers the entire rock. I have also discovered that there are potentially taller land-based lighthouses in the uk, this one just seems to be best at advertising it.