The Greenwood Tree

Scroll to Info & Navigation

The fabled ‘Viking sunstone' thought to be used by ancient Norse mariners as a navigation aid, may have been found in a 16th Century shipwreck off the coast of Alderney, an island between Britain and France.
The ‘sunstone’ found in the shipwreck is about the size of a bar of soap and made from Iceland spar, a type of calcite crystal. It should be transparent but the shipwrecked stone is a milky white after centuries immersed in water and abrasion by sand.
 The crystal allows navigation by the sun when it’s obscured by clouds, or dipped below the horizon, by observing a dot made on the top of the crystal. When observed from below the crystal, the dot refracts into ‘two’ dots. By rotating the crystal until the dots are the same intensity, the direction of the sun can be found.

"Using a transparent crystal similar to the original, the scientists were able to follow the track of the setting Sun in poor light, with an accuracy of one degree. In a second experiment, they were able to locate the Sun for 40 minutes after sunset.’

[source: rawstory.com]

The fabled ‘Viking sunstone' thought to be used by ancient Norse mariners as a navigation aid, may have been found in a 16th Century shipwreck off the coast of Alderney, an island between Britain and France.

The ‘sunstone’ found in the shipwreck is about the size of a bar of soap and made from Iceland spar, a type of calcite crystal. It should be transparent but the shipwrecked stone is a milky white after centuries immersed in water and abrasion by sand.

 The crystal allows navigation by the sun when it’s obscured by clouds, or dipped below the horizon, by observing a dot made on the top of the crystal. When observed from below the crystal, the dot refracts into ‘two’ dots. By rotating the crystal until the dots are the same intensity, the direction of the sun can be found.

"Using a transparent crystal similar to the original, the scientists were able to follow the track of the setting Sun in poor light, with an accuracy of one degree. In a second experiment, they were able to locate the Sun for 40 minutes after sunset.’

[source: rawstory.com]

Recent comments

Blog comments powered by Disqus

Notes

  1. mountainofgoats reblogged this from thegreenwoodtree
  2. hotchocolatepie reblogged this from hogwartswhovianonbakerstreet
  3. floorceilingwindow reblogged this from god0fgods
  4. dollfacedisgrace reblogged this from god0fgods
  5. smileymiley- reblogged this from god0fgods
  6. 13rennon reblogged this from thegreenwoodtree
  7. supersorrel009 reblogged this from verhkrys
  8. heckhound reblogged this from verhkrys
  9. verhkrys reblogged this from ocellis
  10. earthlyexistenceisnotall reblogged this from thegreenwoodtree
  11. daedricbabe reblogged this from thegreenwoodtree
  12. anaganti0s reblogged this from thegreenwoodtree
  13. comblikeabalm reblogged this from thegreenwoodtree
  14. runwaydazed reblogged this from thegreenwoodtree
  15. cleverwitticism reblogged this from lilydalechiken
  16. mimis-palace reblogged this from terraaurea
  17. the-dream-sequence reblogged this from heroinmyownmind
  18. heroinmyownmind reblogged this from cleverwitticism
  19. guudelin reblogged this from call-life-arlelt
  20. mentaldetective reblogged this from rukafais
  21. radio-in-the-snogbox reblogged this from hogwartswhovianonbakerstreet
  22. captainkatrina reblogged this from terraaurea
  23. goodbye-space-ass reblogged this from adorabledeathray
  24. thedapperoptimist reblogged this from cloudplusone
  25. adorabledeathray reblogged this from terraaurea
  26. fetus-speed reblogged this from cloudplusone
  27. geheimnis71 reblogged this from just-one-whimsical-lie
  28. just-one-whimsical-lie reblogged this from godsguliblechildren
  29. pyrosmile reblogged this from rukafais
  30. ladywerewolf reblogged this from okagami