What do we know about light?No posterWhat do we know about light?1955Queuebrick VideoQueueLWatchedWFavoriteFListsDiscussionWhere to watchCopy short link1955What do we know about light?DocumentaryDirected by Bohumil Vošahlík·1955QueueLWatchedWFavoriteFWhere to watchListsRateRateNA/10 avgNo member ratings yetDirectorBohumil VošahlíkCinematographyAlois JiráčekScreenplayJosef PlívaStudioStudio populárně vědeckých a naučných filmů PrahaOverviewDiscussionCastCrewDetailsWhere to watchActorRoleJJiří ŠrámekCommentary (voice)Commentary (voice)