Detection instruments are tools used to identify and measure various physical phenomena, such as light, sound, or radiation. Common examples include thermometers for temperature, microphones for sound, and geiger counters for radiation levels. These instruments help scientists and engineers gather data for analysis and decision-making. In various fields, detection instruments play a crucial role in safety and monitoring. For instance, smoke detectors alert people to fire hazards, while pollution sensors measure air quality. By providing accurate readings, these instruments contribute to public health and environmental protection efforts.