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The pulsating duel between Pogacar and Vingegaard is expected to resume during Sunday’s ninth stage, which finishes with a spectacular climb to Puy-de-Dome, a famed volcanic crater in the Massif Central region of south-central France which last hosted a stage 35 years ago.

The ninth stage on July 9 sees a spectacular climb to Puy-de-Dome, a famed volcanic crater in the Massif Central region of south-central France which last hosted a stage 35 years ago.

Another is that his reference to an experimentum crucis is an implicit nod to Pascal’s �ʳܲ�-���-��ô���� experiment: Pascal’s experiment had been preceded by earlier experiments and earlier theorizing, but in a way that was irrelevant.

Looking back in 1662, Boyle hailed the experiment at the �ʳܲ�-���-��ô���� as the experimentum crucis, the crucial experiment, which had validated a new physics.

Publication was important within this group, but no more important than private and semi-public correspondence: Mersenne wrote letters to Italy, Poland, Sweden and Holland announcing Pascal’s �ʳܲ�-���-��ô���� experiment.