| Refraction. A pencil is placed behind an acrylic rectangular block. The pencil appears to be broken because of optical refraction due to the difference in the refractive index between acrylic and air. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Science Source / Turtle Rock Scientific |
| Bildgröße: | 5162 px × 3432 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |