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Le jeudi 21 septembre 2023 =C3=A0 21:52:01 UTC+2, Richard Verret a =C3=A9cr=
it=C2=A0:
> Le 21/09/2023 =C3=A0 20:52, Richard Hachel a =C3=A9crit :=20
> > C'est de l=C3=A0 qu'est n=C3=A9 le fameux paradoxe de Langevin.=20
> >=20
> > Le paradoxe de Langevin consiste en ceci :=20
> > Lorsque deux protagonistes (Stella et Terrence) =C3=A9voluent dans des =
r=C3=A9f=C3=A9rentiels diff=C3=A9rents leurs montres=20
> > battent r=C3=A9ciproquement et r=C3=A9ellement plus vite que l'autre mo=
ntre.
> Mais r=C3=A9fl=C3=A9chis une minute dans ta t=C3=AAte. Qu=E2=80=99est-ce =
qui se passe si deux coureurs vont, tous les deux, plus vite l=E2=80=99un q=
ue l=E2=80=99autre ?

Des coureurs relativistes ?