Aristotle's View Of The Universe

ARISTOTLE (384 B.C. - 322 B.C.)
Aristotle believed that the universe was spherical and finite. He too believed that the earth was a sphere, much smaller than the stars. To support his theory, he used observations from lunar eclipses stating that lunar eclipses would not show segments with a curved outline if the globe were not spherical. Additionally, he stated that when a person travels north or s, they do not see the aforementioned night stars, nor do they appear in the aforementioned positions in the sky.

Effectually this time in that location was a common belief that iv basic elements existed: earth, air, burn, and water. In addition to these elements, Aristotle believed that there was a fifth element called aether, which he thought to be the bones make up of the celestial bodies. His view of the universe was hierarchical, and he made a distinct difference betwixt the globe and the heavens.

According to Aristotle'south theories of movement, he believed that there were three kinds: rectilinear, circular and mixed. He theorized that the four elements tended to move in straight lines. The earth moved downwardly; fire moved upwards, while water and air fell in betwixt. His 5th chemical element, aether, moved in circles. Aristotle also believed that each planet followed its own specific path.

His hierarchical model of the universe served to profoundly influence medieval scholars, who modified it. Aristotle'southward contribution to astronomy was his ability to ask sure questions about the universe, which served to stimulate others who came after him to find answers.

DEMOCRITUS (460 B.C. - 370 B.C.)
Democritus was born in Abdera, Thrane, and is credited with developing the atomic theory of the universe, which was previously discovered by the Greek philosopher Leucippus.

Democritus's theory stated that the world was composed of hard indivisible particles of matter moving through empty infinite. He speculated that atoms had shape, mass and motion. He believed that the cosmos were formed by a spinning vortex of atoms and that an infinite amount of worlds was formed in a similar way.

ERATOSTHENES (276 B.C. - 196 B.C.)
Eratosthenes was born in Cyrene, now Libya, in N Africa. He was a Greek mathematician, astronomer, geographer and poet, who is credited with measuring the circumference of the globe.

Eratosthenes astronomically adamant the differences in latitude betwixt the Egyptian cities of Syene (nowadays day Aswan) and Alexandria. He compared the noon midsummer shadow between the two cities. He believed the dominicus was so far abroad that its rays were parallel.With his noesis of the distance between the two cities, he formulated the circumference of the globe.

His other contributions include a calendar with leap years and a star catalogue that contained 675 stars. He likewise sketched maps of the route of the Nile to Khartoum and measured the distance to the sun and moon using data collected during lunar eclipses.

HIPPARCHUS (190 B.C. - 120 B.C.)
Hipparchus, built-in in Nicaea (now Iznik, Turkey), was known for being an important mathematician and astronomer. He calculated the length of a yr, every bit well as creating a star chart which named well-nigh 850 stars. Additionally, Hipparchus predicted the positions of the planets, stars and constellations which were used past sailors for navigation. Hipparchus is most famous for the discovery of precession, which is due to the boring change in management of the centrality of rotation of the earth. Hipparchus also fabricated estimations of the distance from the Earth to the moon.

Aristotle's View Of The Universe,

Source: https://www.childrensmuseum.org/legacy-games/cosmicquest/ancient.html#:~:text=Aristotle%20believed%20that%20the%20universe,the%20earth%20were%20not%20spherical.

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