Dual carriageway street lighting. Time-exposure image of car lights and street lights along a dual carriageway. Each street light has a photoelectric switch that is sensitive to light. As the light levels fall as the Sun sets (as here),the switches triggers the lights,turning them on. Such switches are based on light-dependent resistors (LDRs). Photographed in the UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Chillmaid, Martyn F. |
Bildgröße: | 2848 px × 4256 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |