Illustration of the periodic table devised by Emil K. Kohlweiler in 1922. This was the first spatial system, where elements are arranged in three dimensions. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / VISUAL CAPITALIST |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |