16/11/2023
Neon lights are made using glass tubes filled with gases and electrodes at each end. The colors of neon lights are determined primarily by the type of gas and the color of the glass used.
Here's a breakdown:
Neon Gas: The classic neon light color is a bright reddish-orange. This color is produced by using pure neon gas. When an electric current passes through the gas, it ionizes the neon atoms, causing them to emit light.
Other Gases: Different gases can be used to produce other colors. For instance, argon gas mixed with a small amount of mercury v***r emits a pale blue light. Krypton produces a variety of colors, including green and yellow, depending on other factors like the type of coating inside the tube.
Phosphor Coatings: The inside of the glass tubes can be coated with phosphorescent powders. When the gas in the tube is ionized, the ultraviolet light produced excites the phosphor coating, which then emits visible light.
The color of the light depends on the composition of the phosphor. For example, argon with a yellow phosphor coating produces a warm white light, while argon with a blue phosphor emits a cool white light.
Colored Glass: Sometimes, the color of the glass tube itself contributes to the color of the light. Colored glass can be used in combination with different gases and phosphor coatings to create a wide range of colors.
Electric Current and Pressure: The brightness and shade of the color can also be influenced by the electric current's strength and the pressure of the gas within the tube.
This combination of gases, phosphor coatings, colored glass, and electrical factors allows for a wide range of colors and effects in neon lighting.