Historical anemometer. Close-up of an anemometer,a piece of equipment used to measure wind speed. The cup-shaped vanes catch the wind and rotate. The speed of rotation is used to calculate wind speed | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Donne, Michael |
Bildgröße: | 5118 px × 3405 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |