This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Wasserorgel. Wasserorgel Rekonstruktion nach Heron von Alexandria Buchillustration Baumeister Denkmler des klassischen Altertums Band Seite br de original upload date Original uploader was Thomas Ihle at org de Other versions PDold original upload log page de Wasserorgel Thomas Ihle bytes no aus Baumeister Denkmler