History: October 18 (#1)

History: October 18 (#1)
Wikimedia Commons, CC BY-SA
October 18, 320 Pappus of Alexandria, Greek philosopher, observes an eclipse of the Sun and writes a commentary on The Great Astronomer (Almagest).

Commentary

Commentary

On October 18, in the year 320: Pappus of Alexandria, Greek philosopher, observes an eclipse of the Sun and writes a commentary on The Great Astronomer (Almagest). A solar eclipse occurs when the Moon passes be tween Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially. Why October 18, 320 matters: Pappus of Alexandria, Greek philosopher, observes an eclipse of the Sun and writes a commentary on The Great Astronomer (Almagest). What began on this day left a lasting mark on history. The effects were felt immediately and continued to shape events, ideas, and lives long afterwards. Historical context: October 18, 320 The ancient world built many of the foundations still visible today: writing systems, calendars, engineering methods, and enduring cultural traditions. The event on this day: Pappus of Alexandria, Greek philosopher, observes an eclipse of the Sun and writes a commentary on The Great Astronomer (Almagest). Source: https://en.wikipedia.org/wiki/Solar_eclipse (Wikipedia, CC BY-SA)