Neonrør

Neonrør, also known as neon tubes or gas-discharge lamps, are a type of electrical discharge lamp that produces light by exciting a gas within a glass tube. The term "neon" is often used generically to refer to these types of lamps, although other gases such as argon, krypton, and xenon can also be used. The glass tube is typically filled with a noble gas at low pressure, and electrodes at each end allow an electric current to pass through the gas. When the current is applied, the gas becomes ionized, and the resulting free electrons collide with the gas atoms, causing them to emit light. The color of the light depends on the type of gas used; for example, neon gas produces a reddish-orange light, while argon produces a blue-violet light. Neonrør are commonly used in advertising signs, decorative lighting, and low-pressure sodium vapor lamps. They are known for their high efficiency and long lifespan, although they can be more fragile and less durable than other types of lighting. The invention of neonrør revolutionized the signage industry and has since been widely adopted for various lighting applications.