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Viking Sunstone found in ship wreckage!  Calcite crystals like Icelandic Spar create a double image, splitting light into two rays. If the crystal is held east-west, the double image becomes a single image and thus allows a sailor to locate the sun. The crystal's refractive qualities continue to be useful even in low light, on a cloudy day, or for a while after the sun has set.

Viking Sunstone found in ship wreckage! Calcite crystals like Icelandic Spar create a double image, splitting light into two rays. If the crystal is held east-west, the double image becomes a single image and thus allows a sailor to locate the sun. The crystal's refractive qualities continue to be useful even in low light, on a cloudy day, or for a while after the sun has set.

To find the sun after sunset, the Vikings used sunstones - calcite crystals that produce patterns when exposed to the sun’s polarized UV rays.

To find the sun after sunset, the Vikings used sunstones - calcite crystals that produce patterns when exposed to the sun’s polarized UV rays.

Opalised-theropod-dinosaur-tooth.jpg

悠久を経て宝石「オパール」と化した恐竜の牙の化石

我們一般看到的化石,至少都經歷了萬年以上的地質埋藏,原本生物組成的有機物質多多少少都會變質、或被地層中的礦物質…

Viking rune ring from the 8th -10th century found in Cumbria, England. The inscription is most likely a religious prayer or magical charm

Viking rune ring from the 8th -10th century found in Cumbria, England. The inscription is most likely a religious prayer or magical charm

Viking bathing area. Such structures, whether abandoned or still in use, can be found throughout the country, especially among Norse settlements.

Viking bathing area. Such structures, whether abandoned or still in use, can be found throughout the country, especially among Norse settlements.

t-ranquillity:  pes-ca:  boho here! xx    click here for boho ❂ selling a Nikon DSLR Camera! message me for more info :)

t-ranquillity: pes-ca: boho here! xx click here for boho ❂ selling a Nikon DSLR Camera! message me for more info :)

Amber jewellery was much favoured by the Vikings, and it was also made in workshops at Jorvik. The natural material, which is fossilized wood resin, ranges in colour from yellow to deep orange, and can be transparent or completely opaque, so it provides a wide range of colours and finishes from which to choose. Imported from the Baltic region, it was made into wedge-shaped pendants, globular beads, and finger-rings.

Amber jewellery was much favoured by the Vikings, and it was also made in workshops at Jorvik. The natural material, which is fossilized wood resin, ranges in colour from yellow to deep orange, and can be transparent or completely opaque, so it provides a wide range of colours and finishes from which to choose. Imported from the Baltic region, it was made into wedge-shaped pendants, globular beads, and finger-rings.

Strengite - Les Montmins Mine, Allier, Auvergne, France. Chemical Formula FePO4 · 2(H2O) Composition Iron phosphate, often with some aluminum - See more at: http://www.minerals.net/mineral/strengite.aspx#sthash.iAg4rS5L.dpuf

現実なのに非現実的なとても印象深い27枚の写真 | 不思議.net

So hilarious! Just played this as a game with Jonathan where I said the names & he guessed what it was I was describing. He did really well! Only missed two! "Space light"was kinda rough! Lol

So hilarious! Just played this as a game with Jonathan where I said the names & he guessed what it was I was describing. He did really well! Only missed two! "Space light"was kinda rough! Lol

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