earth in space: hellenistic era
DESCRIPTION
Earth in Space: Hellenistic era. Earth in Space: Hellenistic era. Earth in Space: Hellenistic era. Owe Dahren, 2001. Greek visual evidence for the shape of the Earth. Eratosthenes’ method for the circumference of the Earth. Earth in Space: Hellenistic era. - PowerPoint PPT PresentationTRANSCRIPT
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
Owe Dahren, 2001
Greek visual evidence for the shape of the Earth
Eratosthenes’ method for the circumference of the Earth
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
Aristarchos’ construction for the distance to the Sun
Hipparchos’ construction for the distance to the Moon (solar eclipse)
Hipparchos’ construction for the distance to the Moon (lunar eclipse)
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
Hipparchos’ model of the Sun’s orbit
Hipparchos’ model of the Moon’s orbit
Ptolemy’s model of a planetary orbit
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
The Antikythera mechanism, c 100 BC (Freeth et al, Nature 444 (2006) 587)
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
Earth in Space: Hellenistic Earth in Space: Hellenistic eraera
Earth in Space: Islamic eraEarth in Space: Islamic era
Earth in Space: Islamic eraEarth in Space: Islamic era
Earth in Space: Earth in Space: CopernicusCopernicus
Earth in Space: Tycho Earth in Space: Tycho BraheBrahe
Earth in Space: Johannes Earth in Space: Johannes KeplerKepler
Earth in Space: Isaac Earth in Space: Isaac NewtonNewton
A diagram showing centripetal force, by
Hooke
An elliptical orbit, from the Principia
Newton’s cannon