11. This genus is characterised by striae are very fine, densely packed, and situated parallel to the polar axis . 12. For the polar axis altitude adjustment, one can attempt to track a star low in the east or west. 13. During their investigations they also discovered polar motion, the movement of the Earth's polar axis relative to the crust. 14. In 1982, an expedition led by Sir Ranulph was the first successful circumnavigation of the globe on its polar axis . 15. A right-handed convention specifies a axis 90?to the east in the fundamental plane; the axis is the north polar axis . 16. The "'International Latitude Observatories "'were a system of ( originally ) six " wobble " of the Earth on its polar axis . 17. In reality, Earth is not exactly spherical, mainly because of its rotation around the polar axis that makes its shape slightly oblate. 18. A Coriolis effect, caused by the overall planetary rotation, tends to organize the flow into rolls aligned along the north-south polar axis . 19. The Earth's polar axis , and hence the solstices and equinoxes, precess with a period of about years in relation to the fixed stars. 20. The fixed point ( analogous to the origin of a ray from the pole in the fixed direction is the " polar axis ".
