Refraction by a concave lens. Diagram showing the refraction of light beams through a biconcave lens (concave on both sides). Light changes direction, or is refracted, when it meets a different transparent medium such as a lens. A biconcave lens causes light beams to diverge. It is used to correct myopia (short-sightedness), a condition in which light is focused before it reaches the retina. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4181 px × 4181 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |