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What is the liquid in a lava lamp?

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An old, cloudy liquid motion lamp can be rejuvenated with common household ingredients, simple tools and some patience. read more

The lava-lamp wax sinks on cooling, so the surrounding liquid must have a density a little less than 0.9. Ordinary alcohol (ethanol) has a density of about 0.8, and a 40-50 per cent aqueous solution would have a density that could be adjusted to just below that of paraffin wax. read more

Liquid motion lamps, of which the Lava lamp is one trademarked brand, consist of a clear glass lamp body filled with two different colored liquids, along with a small light source and a heating element, both at the base of a lamp body. read more

Liquid motion lamps, also called lava lamps, work by combining two different fluids inside a glass lamp body. One of the fluids is usually wax-based and the other is typically water-based, and the densities of the two fluids are almost, but not quite, equal. read more

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