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