Energy-saving light bulb. 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 / MARK SYKES |
Bildgröße: | 4243 px × 4239 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |