Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 63
seto consider sepa-rately the twocauses to whichit is due. Byadding togetherthe two effects, thetotal equation oftime is obtained.First, therefore, neglecting the obliquity of the ecliptic, wewill examine what would be the equation of time if the orbitof the Earth was in the equator but had the… … Fig. 20.- (Apr. 1) -Efiect of Ellipticity of Earths Orbit atDifferent Seasons. THE EARTH IN RELATION TO THE SUN 51 period as the true Sun. At perihelion, the Sun has an angularvelocity which is greater than its mean value and it MdU there-fore commence to get ahead of the mean Sun and will…
Astronomy
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