Light bulb filament,close-up. A light bulb filament,or electrical filament,is a fine thread of metal made of tungsten. The electrical resistance of the filament makes it glow white-hot when an electrical current travels through it | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Pasieka, Alfred |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |