Detectors are devices or instruments designed to identify and measure specific physical phenomena, such as light, sound, or radiation. They convert these phenomena into signals that can be interpreted or recorded. Common examples include smoke detectors, which sense smoke particles in the air, and metal detectors, which locate metallic objects underground. In scientific research, detectors play a crucial role in experiments. For instance, particle detectors are used in high-energy physics to observe and analyze subatomic particles. Similarly, infrared detectors can capture heat emitted by objects, making them useful in various applications, including night vision technology and thermal imaging.