جستجو
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Equinox
01
اعتدال, نقطه اعتدال
(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic
02
اعتدال, نقطه اعتدال
either of the two moments in a year when the Sun, in its apparent motion along the ecliptic, crosses the celestial equator, resulting in approximately equal periods of daylight and darkness worldwide
مثالها
During the autumn equinox, the length of day and night are nearly equal.
در طول اعتدال پاییزی، طول روز و شب تقریباً برابر است.
