Esprit S.F.

S.F. F. & F. Culture (Science-Fiction, Fantasy & Fantastic)

Dico S.F. – Bernal sphere

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Imagined as soon as 1929 by the scientist John Desmond Bernal, a Bernal sphere is a space megastructure initially constituted with a 10 miles diameter sphere filled with air for a 30 000 individuals population. In its original version, the sphere doesn’t rotate and doesn’t produce any artificial gravity.

In the versions of physicist Gerard K. O’Neill (called Island One and Island Two), the sphere is tiner and rotate at about 2 RPM to produce one terrestrial gravity.

Matching words : O’Neill cylinder, Dyson sphere, Stanford torus

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