Fakatuʻutāmaki ke ʻosi ʻa e paʻanga
Ko e ngalingali ke mole kotoa ʻa e paʻanga vaʻinga kimuʻa pea aʻu ki ha taumuʻa pe ki ha lahi ʻo e vilo.
ʻI hono ngāueʻaki
Ki he ngaahi peti totongi tataupetiPeti totongi tatauKulokula/ʻuliʻuli, taʻehoa/hoa, māʻolunga/māʻulalo. Fika ʻe 18, totongi ʻo e 1:1.Lau kotoa → ʻoku tatau, ʻoku muimui ia ki he fomula ʻo e ʻosi ʻa e paʻanga ʻa e tokotaha peti; ko e ngaahi peti lalahi ange, ʻo fakaʻohovale, ʻoku nau fakalelei ʻa e faingamālie ke aʻu ki ha taumuʻa koeʻuhi ʻoku siʻi ange ʻa e paʻanga ʻoku nau tuku ki he tuʻunga lelei ʻo e kasino.
Naʻe ʻoatu ʻe Pascal ʻa e palopalema ʻo e ʻosi ʻa e paʻanga ʻa e tokotaha peti kia Fermat ʻi he 1656, pea naʻa na solova fakatouʻosi; naʻe fanongo ki ai ʻa Huygens, solova foki ia pea paaki ʻi he 1657. ʻOku motuʻa ange ia ʻi he lulēti tonu.