english: So he imagined that the world had four dimensions of space, not three, and imagined that electromagnetism was warps and curves in that fourth dimension. Now here's the thing: when he wrote down the equations describing warps and curves in a universe with four space dimensions, not three, he found the old equations that Einstein had already derived in three dimensions -- those were for gravity -- but he found one more equation because of the one more dimension.
non_english: Takže si predstavil, že svet má štyri priestorové dimenzie a nie tri, a predstavil si, že elektromagnetizmus sú krivky a záhyby v tejto štvrtej dimenzii. A teraz príde to hlavné: keď zapísal vzorce opisujúce krivky a záhyby vo vesmíre so štyrmi dimenziami, nie tromi, našiel staré rovnice, ktoré už Einstein odvodil pre tri dimenzie - - tie pre gravitáciu - - ale našiel ešte jednu navyše, vďaka dimenzii navyše.