3 ms·

Iceland Spar

• nixy 2y ago
  I assume this is partly interesting/funny because in the UK, both "Iceland" and "Spar" are grocery store chains :)
• steinvakt2 2y ago
  That's very cool. I wanna get one for myself
  • xg15 2y ago
    Huh, it's actually on Amazon for something like $8 for a small piece (no idea if they are fakes though) Now I'm tempted as well...
• 082349872349872 2y ago
  I've always wanted to build a birefringent sun dial, "I only count the cloudy hours": https://en.wikipedia.org/wiki/Iceland_spar#Uses https://en.wikipedia.org/wiki/Iceland_spar#Uses
• deleted 2y ago
  [deleted]