Aneroid barometer, illustration. An aneroid barometer is an instrument for measuring pressure. The instrument consists of a flexible metal box called an aneroid cell or capsule (round), which contains a vacuum. Small changes in atmospheric pressure (blue arrow) cause the capsule to expand or contract. These movements are amplified by a mechanical lever attached to a pointer which allows changes in pressure to be read off the scale (right). Barometers measuring atmospheric pressure are used in weather forecasting. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4331 px × 4331 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |