![]() ![]() By combining various gases and adjusting their proportions, a diverse palette of neon light colours can naturally be achieved, but – as previously mentioned – the only commercially relevant noble gases for neon sign production are neon itself and argon. ![]() The noble gas radon technically has a hot red discharge, but can’t be used commercially due to its radioactivity. Helium produces a bright orange or pink shade, while krypton generates a pale white or very pale blue colour, and xenon creates a cool blue tint. Argon, for instance, naturally produces a lavender hue or, in combination with a tiny amount of mercury inside the tube, a light blue discharge (also known as our “Classic Blue” colour). While neon gas itself emits a reddish-orange glow (our “Classic Red” neon colour), adding different gases can alter the colour spectrum. Next to our “Classic” neon colours, which use the natural colours of the gas mixture inside the tube, Sygns neon colours are divided into two additional categories: “Powdered” colours, which are produced by an internal coating of the glass tubes that appears white when the neon sign is turned off and “Coloured” colours, for which the glass tubes are coated with the specific colour to be achieved, which means that the tubes stay the same colour when turned off and on.īy manipulating all these factors, manufacturers can create an extensive range of shades to suit different artistic and commercial needs. Additionally, the composition of gases used and the amount of electrical current passing through the tube contribute to colour variation.īut most importantly for the production of commercial neon signs, coatings applied to the inside of the glass tubing can also affect the colour by altering the wavelength of the emitted light. Temperature and pressure play a role in determining the shade and intensity of the light produced. Several factors influence the colour emitted by neon signs. ![]()
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