Ultraviolet detectors are devices designed to sense and measure ultraviolet (UV) radiation, which is a type of electromagnetic radiation with wavelengths shorter than visible light. These detectors are commonly used in various applications, including environmental monitoring, medical diagnostics, and safety equipment, to assess UV exposure levels and protect against harmful effects. There are several types of ultraviolet detectors, including photodiodes, photomultiplier tubes, and solid-state sensors. Each type operates on different principles, such as the photoelectric effect or fluorescence, to convert UV light into an electrical signal that can be measured and analyzed.