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Moisture
sensor
in the car
Lie detector
→
In everyday language, a lie detector refers to a device
that measures and displays bodily signals — such as
blood pressure, pulse, breathing rate, or the electrical
conductance of the skin — during an interrogation. In
technical terms, the device is not called a lie detector, but
a polygraph
("multi-writer").
In some countries, lie detectors are not permitted in a
court of law, because they only work well with people
who are cooperative. Even something as simple as a hand
movement can falsify the results, meaning that the
recorded reactions will not be typical for a given
true or false answer.
→
Almost every car has an electronic
moisture sensor, which serves to detect
whether there is enough water in the
windshield wiper system.
If the water level drops far enough to
leave the moisture sensor "hanging in
the air," a diode lights up on the
dashboard or the moisture sensor sends
a signal to the on-board computer.
Conductance
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