15th century illustration depicting a geographer with lodestone,by Stradanus. Lodestone is a naturally magnetized piece of the mineral magnetite that was used in the first compasses. Its importance to early navigation is evinced by its name,which means 'leading stone' in Middle English | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Omikron |
Bildgröße: | 3624 px × 2543 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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