:: Once you've realized how to do it, it is quite simple even starting from the fundamental principles, if you assume a spherical Earth with radius " r ".
32.
He is sometimes incorrectly credited with the introduction of a model that divides a spherical earth into five zones : one hot, two temperate, and two cold northern and southern.
33.
In the 17th century, the idea of a spherical Earth spread in China due to the influence of the Jesuits, who held high positions as astronomers at the imperial court.
34.
Plato and Aristotle helped to formulate the original theory of a sublunary sphere in antiquity-the idea usually going hand in hand with geocentrism and the concept of a spherical Earth.
35.
Since measurements within UTM employ fixed distances ( e . g ., 30 meters between elevation samples ), the quadrangle must slightly distort to map such locations onto the spherical Earth.
36.
It starts with a Big Bang, expands to a maximum point like the spherical Earth's Equator and then contracts toward an eventual collapse in what is sometimes called the Big Crunch.
37.
Aristotle accepted the spherical shape of the Earth on empirical grounds around 330 BC, and knowledge of the spherical Earth gradually began to spread beyond the Hellenistic world from then on.
38.
Likewise, the fact that Bertold von Regensburg ( mid-13th century ) used the spherical Earth as an illustration in a sermon shows that he could assume this knowledge among his congregation.
39.
Astronomers believed that the seven naked-eye planets ( including the Moon and the Sun ) were carried around the spherical Earth on invisible orbs, while an eighth sphere contained the fixed stars.
40.
Plato proposed that the seemingly chaotic wandering motions of the planets could be explained by combinations of uniform circular motions centered on a spherical Earth, apparently a novel idea in the 4th century.
