Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 40
making the appro- THE EARTH 27 priate modification in Eulers investigation, the observedperiod can be accounted for. The motion of the Earths pole (i.e. the end of its axis ofrotation) about its mean position from 1912 to 1920 is illus-trated in Pig. 10. In this figure, the origin of the… … -0-70 -0-20 O^-y ^040 +0-30 +0-20 +0-10 O-OO +x Fici. 10.—The Movement of the Earths Pole, 1912-0-1920-0.{001 = 1 foot on Earths surface.) along the meridian of Greenwich ; a displacement along they axis indicates a movement in the perpendicular direction.During the period, the pole has described…
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
