Detection techniques are methods used to identify and analyze various phenomena, such as signals, substances, or patterns. These techniques are essential in fields like medicine, environmental science, and security. Common examples include spectroscopy, which analyzes light to determine material composition, and machine learning algorithms, which can detect patterns in large datasets. In addition to these, sensors play a crucial role in detection by measuring physical properties like temperature or pressure. Other techniques, such as image processing, help in recognizing objects or anomalies in visual data. Overall, detection techniques are vital for advancing technology and improving safety.