Light bulb filament. Electric current passing through the tungsten filament (top left) has caused it to heat up and emit light | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Knapton, Chris |
Bildgröße: | 3206 px × 4423 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |