A 35W Sodium Vapour Lamp is a specific type of high-intensity discharge (HID) lamp that emits light by exciting sodium vapour. With a power rating of 35 watts, this lamp produces a characteristic yellow-orange light output, primarily consisting of two dominant spectral lines at 589.0 and 589.6 nanometers. Sodium vapour lamps are commonly used in various applications such as street lighting, industrial facilities, and indoor grow lights due to their high efficiency and long lifespan. These lamps operate by passing an electric current through a mixture of noble gases and sodium vapour within a sealed glass tube. The excited sodium atoms emit light when they return to their ground state, resulting in the characteristic sodium lamp glow. The 35W Sodium Vapour Lamp provides reliable and energy-efficient illumination suitable for a range of outdoor and industrial lighting needs.