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Pi descrie raportul dintre circumferinţa unui cerc şi diametrul său.
Primii care au încercat să calculeze numărul pi au fost babilonienii. Ei cu calculat că suprafaţa unui cerc este de 3 ori pătratul razei, astfel că au obţinut valoarea 3.
Ulterior, vechii egipteni au ajuns la valoarea 3,1605, dar în prezent este scrisă pe scurt ca fiind 3,14.
Numărul pi este sărbătorit în întreaga lume într-o zi specială, pe 14 martie.
Tot pentru a celebra acest număr important, Michael Blake a compus o melodie deosebită.
El a folosit un număr pentru fiecare notă muzicală, obţinând astfel un cântec care conţine toate cifrele lui pi.
Iată ce a ieşit.
Sursa: IFL Science
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