click to view the MPEG movie (cliquez pour voir le film MPEG)

N-body problem integration (N=4: one star, one heavy planet and one light planet with a satellite) computed on three different computers (the Red one, the Green one and the Blue one: sensitivity to rounding-off errors) [Intégration du problème des N-corps (N=4: une étoile, une planète lourde et une planète légère avec un satellite) calculé sur trois ordinateurs différents (le Rouge, le Vert et le Bleu: sensibilité aux erreurs d'arrondi)].




The same program is run on three different computers with exactly the same initial conditions -see bottom left picture-:



The forecasts made by the three computers are very far from being identical (for example, the Red light planet escape from the star system -see upper left picture-).


See some related pictures (possibly including this one):

N-body problem integration (N=4)with one yellow star and two planets (the red one being very heavy and the blue one and its white satellite being light) -yellow body point of view- N-body problem integration (N=4)with one yellow star and two planets (the red one being very heavy and the blue one and its white satellite being light) -blue body point of view- N-body problem integration (N=4)with one yellow star and two planets (the red one being very heavy and the blue one and its white satellite being light) -white body point of view- N-body problem integration (N=4)with one yellow star and two planets (the red one being very heavy and the blue one and its white satellite being light) -orange body point of view-


(CMAP28 WWW site: this page was created on 10/09/1995 and last updated on 01/10/2021 13:49:51 -CET-)



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