...allows one to see that apparent solar time cannot be a uniform time [14]. There is also an effect due to the inclination of the earth's axis to the plane of its orbit (ecliptic plane). A pictorial diagram of the sun-earth-moon relationships is shown in figure 1.2. 1.4.1....

...gravitational attraction on the near bulge and the far bulge, thus exerting a pull that would tend to alter the inclination of the earth's axis to the plane of its orbit, thereby producing precession. The facts of precession had been known for centuries, but the general...

...cold of a particular country" (145). Logically, Webster points out, "we have no reason to suppose that the inclination of the earth's axis to the plane of its orbit has ever varied: but strong evidence to the contrary. If this inclination has always been the same,...

...point. The circle is completed once in about 21 000 years. This is the precession (Fig. 9.6). Also, the inclination of the Earth's axis to the plane of its orbit changes through time. It is 66 1/2° at present, but varies between about 65° and 68° once in 41...

...such changes when astronomical controls ofklimata were unchanging: We have no reason to suppose that the inclination of the earth's axis to the plane of its orbit has ever been varied; but strong evidence to the contrary. If this inclination has always been the...

...of the orbit change with time, as does the time of year when the Earth is farthest from the sun and the inclination of the Earth's axis to the plane of its orbit (obliquity). The periods of these variations range from about 20 000 years to over 400 000 years. However,...

...and nights are caused by the rotation of the earth. The days and nights are of unequal lengths due to the inclination of the earth's axis to the plane of its orbit. However on two days of the year 21st March and 21st September, days and nights are equal all over the...