| Both sides previous revision Previous revision Next revision | Previous revision |
| project:back_to_the_greek_universe [2019/12/17 08:21] – [Back to the Greek Universe] weibelth | project:back_to_the_greek_universe [2020/02/06 14:44] (current) – [Data] weibelth |
|---|
| - Saturn | - Saturn |
| - Fixed stars | - Fixed stars |
| {{ :project:universum.png?319x328|Renaissance woodcut illustrating the Ptolemaic sphere model}}The movements of the celestial bodies as they appear to earthlings are expressed as a series of superposed circular movements (see [[https://en.wikipedia.org/wiki/Deferent_and_epicycle|deferent and epicycle]] theory), characterized by varying radius and speed. The tabular values that serve as inputs to the model have been extracted from the literature. | {{ :project:universum.png?319x328|Renaissance woodcut illustrating the Ptolemaic sphere model}}The movements of the celestial bodies as they appear to earthlings are expressed as a series of superposed circular movements (see [[https://en.wikipedia.org/wiki/Deferent_and_epicycle|deferent and epicycle]] theory), characterized by varying radius and speed. The tabular values that serve as inputs to the model have been extracted from literature. |
| |
| [[https://www.youtube.com/watch?v=fm-YscWz1Xc|Demo Video]] | [[https://www.youtube.com/watch?v=fm-YscWz1Xc|Demo Video]] |
| |
| Claudius Ptolemy (~100-160 AD) was a Greek scientist working at the library of alexandria. One of his most important works, the «Almagest», sums up the geographic, mathematical and astronomical knowledge of the time. It is the first outline of a coherent system of the universe in the history of mankind. | Claudius Ptolemy (~100-160 AD) was a Greek scientist working at the library of Alexandria. One of his most important works, the «Almagest», sums up the geographic, mathematical and astronomical knowledge of the time. It is the first outline of a coherent system of the universe in the history of mankind. |
| |
| Back to the Greek Universe is a VR model that rebuilds Ptolemy’s system of the universe on a scale of 1/1 billion. The planets are 100 times larger, the earth rotates 100 times more slowly. The planet orbits periods are 1 million times faster than they would be according to Ptolemy’s calculations. | Back to the Greek Universe is a VR model that rebuilds Ptolemy’s system of the universe on a scale of 1/1 billion. The planets are 100 times larger, the earth rotates 100 times more slowly. The planet orbits periods are 1 million times faster than they would be according to Ptolemy’s calculations. |
| ===== Data ===== | ===== Data ===== |
| |
| The data used include 16th century prints of Ptolemy's main work, the [[https://en.wikipedia.org/wiki/Almagest|Almagest]] (both in greek (original language) and latin) and high-resolution surface photos of the planets in Mercator projection. The photos are mapped onto rotating spheres by means of Mozilla's web VR framework [[https://aframe.io/|A-Frame]]. | The data used include 16th century prints of Ptolemy's main work, the [[https://en.wikipedia.org/wiki/Almagest|Almagest]] (both in greek and latin) and high-resolution surface photos of the planets in Mercator projection. The photos are mapped onto rotating spheres by means of Mozilla's web VR framework [[https://aframe.io/|A-Frame]]. |
| |
| [[https://commons.wikimedia.org/wiki/File:Whole_world_-_land_and_oceans_12000.jpg|{{:project:earth-small.jpg?400x200|Earth}}]] | [[https://commons.wikimedia.org/wiki/File:Whole_world_-_land_and_oceans_12000.jpg|{{:project:earth-small.jpg?400x200|Earth}}]] |