520nm

520nm refers to a wavelength of light, specifically 520 nanometers. This wavelength falls within the visible spectrum, generally perceived as green. Light at this wavelength is produced by various sources, including certain lasers and light-emitting diodes (LEDs). Green lasers at 520nm are common in applications such as laser pointers, barcode scanners, and scientific instruments due to their brightness and visibility. In lighting technology, 520nm LEDs can be used to generate green light for displays, signaling, or specialized lighting applications. The human eye is particularly sensitive to green light, meaning that light at around 520nm appears brighter than light of other colors at the same intensity. This increased sensitivity contributes to the widespread use of green light in visual indicators and target acquisition systems. The specific color perceived can also vary slightly depending on factors such as the observer's individual color perception and the surrounding light conditions.