Od metafizike do fizike svjetla

Filozofska Istrazivanja 26 (3):559-570 (2006)
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Abstract

Za svjetlo možemo reći da je istinski razbuđivač mišljenja , kako u metafizici tako u prirodnoj filozofiji i znanosti. Želimo ukazati na posebnost Petrića kao onoga mislioca s kojim je dokončana epoha od antike nasljeđene metafizike svjetla i koji otvara put za novovjekovnu fiziku svjetla, naročito u djelu Panaugia, ali ne samo u njemu. Nakon Petrića uslijedila su brojna uzbudljiva znanstvena otkrića koja su rezultirala dubokim uvidima u narav svjetla, u geometriji, a posebice u fizikalnoj optici: svjetlo se širi konačnom brzinom, složeno je, dio je elektromagnetskog spektra zračenja, djeluje na materiju , dovedeno je u svezu s masom i energijom. Ono nas začuđuje dualnošću svoje prirode čestice i vala. Istraživanjem zračenja tamnog tijela, suprotnosti vidljivog svjetla, otvorena je epoha kvantne fizike. Pitamo: Možemo li na osnovu mnoštva znanja o svjetlu do kojih su došli fizičari govoriti o bîti svjetla ? Fotonika je nova epoha u komunikacijskoj tehnologiji. Što tek treba očekivati od istraživanja fotosinteze?Light has been defined as a true instigator of thought both in metaphysicsand in philosophy of natureand science. This article focuses on the exceptional position of Frane Petrić as the philosopher with whom the epoch of metaphysics of light inherited fromantiquityended and the path for the new epoch of the physics of light started – especially inhiswork Panaugia,though not only in it. AfterPetrić, numerousexciting scientific discoveries occurred that resulted in profoundinsights into the nature of light – in geometry,and especiallyinphysical optics: light travels with finite speed, it is complex, it is part of electromagneticspecterof radiation, it has effect on matter , it has been relatedto mass and energy.Lightamazes us with the duality of its natureas both a particle and a wave. The researchon theradiationof dark objects and the contrast with visible light has opened the epoch of quantumphysics.The question this lectureposes is: Based on the body of knowledge about light accumulatedby the physicists, could we talk about the essence of light ? Photonics isanew epoch in communication technology.What then could we expect from the research on photosynthesis?

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