Isaac Newton
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Syr Isaac Newton (25 Mis Kevardhu 1642 – 20 Mis Meurth 1726 [furv goth]) o mathematgydh ha godhonydh sowsnek. Ev o poesek dhe'n domhwelyans godhoniethek hag y lyver Philosophiæ Naturalis Principia Mathematica a dhallethas studhyans awgrym klassek an gwayans.