Greek View of Motion and the Universe
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Founder of Ionian School of Philosophies
Thales of Miletus
He proposed that a cylindrical earth is rest in the center of the universe surrounded by air.
Anaximander
Said that light traveled FAST but not INFINITE speed
Empedocles
Suggested that the stars were fixed onto a solid transparent crystalline sphere and rotated across the sky
Anaximenes
According to him the earth is formed within a vortex
Empedocles
Believed in well ordered harmonious universe
Pythagoras
Model that states that earth moved around a central fire
Pythagorean Model
Proposed that the milky way was composed of thousand of stars
Democritus
Proposed that everything orbits in a tilted plane or equinoxes
Hipparchus
Stated that the moon shine by reflected sunlight had encounter mountains First to exclaim that the sun is not a GOD
Anaxagoras
Believed that the stars, sun and moon were fixed
Plato
Father of Modern Astronomy
Hipparchus
Father of Trigonometry
Hipparchus
How did Hipparchus measure or catalog stars? State the number range
By their brightness 1 being the brightest and 6 being the dimmest
Discovered that the earth is round by observing the shadow of the earth in a lunar eclipse
Aristotle
What is diurnal motion?
Daily motion of earth
Who proposed the Julian Calendar?
Erastothenes
What is an annual motion?
1 complete revolution of the earth around the sun
Reefers to an object that spins in the same direction as it’s orbit
Prograde
Founded his own school of Lyceum in Athens
Aristotle
Refers to an object that spins in the opposite direction of it’s orbit
Retrograde
He believed that the Earth was the center of the universe
Aristotle
Was debated to be either a group of mathematicians or an actual mathematician
Euclid
Who was the great teacher of Aristotle
Plato