Energy-saving light bulb next to its box. These light bulbs are a form of fluorescent lighting,which produces less heat than an incandescent bulb. More of the electrical energy is therefore converted to light,making it more efficient | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Trevor Clifford Photography |
Bildgröße: | 3425 px × 5117 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |