| 21. | In the end, the Hadley octant and later sextant took precedence as instruments for navigators.
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| 22. | Because the components of have to be positive, this shell spans an octant of a sphere.
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| 23. | Jean-Paul Fouchy, a mathematics professor and astronomer in France invented an octant in 1732.
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| 24. | The octant, while occasionally constructed entirely of brass, remained primarily a wooden-framed instrument.
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| 25. | Similarly, there are 100?octants, but these are not separated as unique types of instruments.
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| 26. | But at the octants that precede the syzygies, it is about two thirds of a degree behind.
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| 27. | Scintillating bars were arranged parallel to the beamline, with six bars for each half of the octant.
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| 28. | As one moves around the circle, each octant reflects a progressive blend of the two axial dimensions.
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| 29. | One of the earliest instruments for nautical use was the quadrant; this was followed by the octant.
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| 30. | The convention used for naming a specific octant is to list its signs, e . g . or.
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