english: Now if I take a laser pointer and turn it on and off in one trillionth of a second -- which is several femtoseconds -- I'll create a packet of photons barely a millimeter wide.
non_english: Če vzamem lasersko kazalko in jo vključim za bilijoninko sekunde, kar je nekaj femtosekund, ustvarim paket fotonov, ki je širok zgolj milimeter.