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celestial spheres
© Copyright Paul Marsden. All rights reserved www.f29.co.uk
In the Ancient world, the circle was seen as the ideal form, and this informed the view of the solar system and influenced there view of the heavens.
Potelmy's geocentric model, which was the prevailing view of the solar system and Earth's place in it for over 1400 years (till debunked by Copernicus), held that the Earth was static at the centre of the universe, with all other bodies revolving around it in perfect circles.
In the Ptolemaic system, the planets are assumed to move in a small circle called an epicycle, these epicycles rotated along a larger circle called a deferent, which in turn rotated around the Earth.
The Earth then was like as the central hub of the cosmos, everything else orbiting it eastward in uniform motion.
This allowed Potelmy to explain planetoids retrograde motion -- the point at which planets seem to double back on their orbits at certain points in the year. With circles turning on circles at somepoint they seem to double back on themselves, which creates the idea of the spirograph like pattern in the design.
Although totally defunct, there's something more elegant in a way about Potelmy's geocentric model -- circles rotating on circles, spinning in greater circles creates this real idea of a real cosmic ballet.
This design is partly based on a Victorian print i found on the web whilst researching Ptolemy and the geocentric model
You can read more about the geocentric model here:
celestial spheres
© Copyright Paul Marsden. All rights reserved www.f29.co.uk
In the Ancient world, the circle was seen as the ideal form, and this informed the view of the solar system and influenced there view of the heavens.
Potelmy's geocentric model, which was the prevailing view of the solar system and Earth's place in it for over 1400 years (till debunked by Copernicus), held that the Earth was static at the centre of the universe, with all other bodies revolving around it in perfect circles.
In the Ptolemaic system, the planets are assumed to move in a small circle called an epicycle, these epicycles rotated along a larger circle called a deferent, which in turn rotated around the Earth.
The Earth then was like as the central hub of the cosmos, everything else orbiting it eastward in uniform motion.
This allowed Potelmy to explain planetoids retrograde motion -- the point at which planets seem to double back on their orbits at certain points in the year. With circles turning on circles at somepoint they seem to double back on themselves, which creates the idea of the spirograph like pattern in the design.
Although totally defunct, there's something more elegant in a way about Potelmy's geocentric model -- circles rotating on circles, spinning in greater circles creates this real idea of a real cosmic ballet.
This design is partly based on a Victorian print i found on the web whilst researching Ptolemy and the geocentric model
You can read more about the geocentric model here: