A High-Pressure Sodium Lamp (HPS) is a type of gas discharge lamp that produces light by passing an electric current through sodium vapor. These lamps are known for their efficiency and long lifespan, making them popular for street lighting and industrial applications. The light emitted has a characteristic yellow-orange hue, which can affect color perception in illuminated areas. HPS lamps operate at high pressure, which allows them to generate more light compared to low-pressure sodium lamps. They are often used in outdoor settings, such as parking lots and roadways, due to their ability to illuminate large areas effectively while consuming less energy than traditional incandescent bulbs.