Multi-spectral detectors are devices that capture data across multiple wavelengths of light, including visible, infrared, and ultraviolet. These detectors are commonly used in various fields such as remote sensing, agriculture, and environmental monitoring to analyze the characteristics of objects and surfaces. By measuring different wavelengths, they can provide detailed information about the composition and health of materials. These detectors work by using sensors that can differentiate between various light wavelengths. This capability allows them to identify features that are not visible to the naked eye, making them valuable tools in applications like satellite imaging and medical diagnostics. Their ability to gather diverse data enhances our understanding of complex systems.