How does flowrecent tube glow?

A flowrecent tube glows due to the presence of gas inside it, which becomes ionized when an electric current passes through. This ionization process excites the gas atoms, causing them to emit light as they return to their normal state. The specific color of the glow depends on the type of gas used; for example, neon produces a reddish-orange glow, while argon emits a blue light. The design of the tube allows for the visual effect to be enhanced, making it a popular choice for decorative lighting.