Thicker in the centre than on the edges, they cause parallel light rays emanating from an object to converge onto the same point. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source / QA International |
Bildgröße: | 4000 px × 2250 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |