discoveries and inventions 2 [vynechat] objavy a vynálezy 2 [vynechat] scientists 2 [vynechat] vedci 2 [vynechat] dejiny objavov a vynálezov 1 [vynechat] dejiny vedy 1 [vynechat] history of discoveries and inventions 1 [vynechat] history of science 1 [vynechat] inventors 1 [vynechat] kvantová mechanika 1 [vynechat] objavitelia a vynálezcovia 1 [vynechat] quantum mechanics 1 [vynechat] science 1 [vynechat] teória spontánneho radu 1 [vynechat] veda 1 [vynechat]