Johannes Kepler's world secret

SKU: 2580
Category: Pleasure and Leisure
Manufacturers: Astromedia

The planetary model from the Mysterium Cosmographicum of 1595 is the first step towards the laws of planetary orbits.

9 piece In stock
Delivery time: 2 - 3 Workdays (DE - int. shipments may differ)

14,90 €

incl. 19% VAT , plus (Paket)

piece

Johannes Kepler's world secret

For each of the 5 Platonic solids one can determine two exactly defined spheres: The so-called circumsphere, into which the body fits exactly so that its corners touch the sphere, and the so-called insphere, which fits exactly into the body so that it touches the centres of the surfaces from which the body is formed. Johannes Kepler's ingenious idea was to nest the 5 Platonic solids in a very specific order in such a way that the circumsphere of a solid is always exactly as large as the insphere of the next larger solid. This results in precisely defined size and distance ratios of the 5 Platonic solids as well as of the 6 spheres inscribed and inscribed around them. If one now imagines the orbits of the planets running on these spheres, one obtains their size ratios and thus their distances from each other.

With AstroMedia's model, a cardboard kit is now available that would certainly have pleased Johanes Kepler. Due to its construction, it differs in a few points from the original engraving of 1596: the spherical shells between the Platonic bodies are only indicated by circular lines so that the model remains transparent, the planetary orbits are not quite as wide as those of Kepler, and the size of the model is such that it will fit on a bookshelf or desk.

Scope of delivery: pre-cut and printed cardboard sheets for assembly with detailed assembly instructions.
Dimensions of the assembled item: approx. 20 x 21.5 cm
Difficulty: medium
Time required: relatively time-consuming

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