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Ah I think I got it. It looks like Mathematica is set up to use 6 counting digits. But if I wanted to use more, is there a way to change it?
Here's the file and code: [mcode](* Konstanten *) m = 4*1.672621777*10^-27;(* Masse Alpha-Teilchen *) e = 1.60218 * 10^-19 ; (* Elementarladung *) z = 79 ;(* Ordnungszahl Gold *) r = 4*Pi*8.854*10^-12; (* 4 Pi Epsilon Null *) (* Variablen *) ...