Capacitance

principle · 1745 · Early modern era

The ability of conductors to store charge; the capacitor is based on it.

Where it is used

• Microphone — is used in. In a smartphone’s MEMS microphone, the vibrations of the diaphragm change the capacitance between it and a fixed plate.
• Touch layer (capacitive) — is used in. A finger changes the capacitance between electrodes; the controller calculates the point of touch.
• Supercapacitor — is used in. The huge capacitance of a double layer.
• Capacitor — is used in. It stores charge thanks to capacitance.
• Theremin — is used in. A hand changes the capacitance of the antenna.
• Touchpad — is used in. Capacitive.
• Condenser microphone — is used in. Capacitance.
• Fingerprint scanner — is used in. A capacitive scanner.

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