Detection and measurement
Detection of events and the measurement of quantities are two interrelated tasks of electronics. In this chapter we look at a range of instances of how electronics is applied to these tasks. In the following chapter we see how we may use the information so gathered.
There are several reasons why electronic methods are so often superior to other techniques for detection and measurement:
Speed: the response time of electronic sensors is usually of the order of milliseconds or microseconds.
Sensitivity: electronic circuits can detect events or make measurements that are totally out of range of human perception.
Safety: electronic devices can perform their tasks in environments where it is dangerous for humans to venture.
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