English: Barnes hut tree for a distribution of 5000 particles. Only the 146 nodes are beeing shown that are used for calculating the force acting on a particle at the point of origin.
Deutsch: Barnes-Hut-Baum für eine Verteilung von 5000 Partikeln. Es werden nur die 146 knoten angezeigt werden, die zur Berechnung der Kraft auf ein Teilchen im Koordinatenursprung herangezogen werden.
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{{Information |Description={{en|1=Initial particle distribution showing two two simulated galaxies.}} |Source=Own work by uploader |Author=Ingo Berg |Date=2009-07-26 |Permission= |other_versions= }}