Nagib osi: razlika između inačica

The axial tilt may equivalently be expressed in terms of the planet's orbital plane and a plane perpendicular to its axis. In our [[solar system]], the Earth's orbital plane is known as the [[ecliptic]], and so the Earth's axial tilt is also called the ''obliquity of the ecliptic''.

 

 

The [[Earth]] has an axial tilt of 23.45°. The axis is tilted in the same direction throughout a year; however, as the Earth orbits the [[Sun]], the [[hemisphere]] tilted away from the Sun will gradually come to be tilted towards the Sun, and vice versa. This effect is the main cause of the [[season]]s. Whichever hemisphere is currently tilted toward the Sun experiences more hours of [[sunlight]] each day, and the sunlight at midday also strikes the ground at an angle nearer the [[vertical]] and thus delivers more [[heat]].