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==Expedition item== | ==Expedition item== | ||
===[[Gergana]] – ''"Brass | ===[[Gergana]] – ''"Brass Sixtant"''=== | ||
The Sextant has been used to measure the angle between any two visible objects. It is an important part of celestial navigation( sailing). The angle and the time when it was measured, can be used to calculate a position line on a nautical point. Around 1750 the | The Sixtant (or Sextant pls ignore the name) has been used to measure the angle between any two visible objects. It is an important part of celestial navigation( sailing). The angle and the time when it was measured, can be used to calculate a position line on a nautical point. Around 1750 the Sixtant ( and Octant) became the main instrument for navigation. | ||
Check the gif!:)[http://commons.wikimedia.org/wiki/File:Using_the_sextant_edit1.gif?uselang=de commons] | |||
Further reading [http://en.wikipedia.org/wiki/Sextant wiki] | |||
[[File:Brass Sextant.jpg]] | [[File:Brass Sextant.jpg]] |
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