O zasadzie zachowania energii na przykładzie bardzo fajnego eksperymentu z piłkami. https://www.facebook.com/SciFunPL ————————— Legal stuff: http://www.freestockmusic.com/license-agreement/ http://www.freestockmusic.com/2011/pop-production-music/free-pop-rock-production-music-pink-garbage/ http://www.freestockmusic.com/2012/cinematic-production-music/free-cinematic-stock-music-hacking-the-mainframe/ Pictures: public domain, own work.
