Solar-powered calculator. This calculator uses a photovoltaic cell (gold upper centre) to convert sunlight into electrical energy which it uses to power itself. When incident light falls onto the cell a voltage is produced across the surface. Solar-powered calculators are often also equipped with batteries as a back up | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Trevor Clifford Photography |
Bildgröße: | 5117 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |