Using Decorative And Impressive Lava Lamps

Using Decorative And Impressive Lava Lamps

Lava lamps are decorative items coveted for the melodic rising and falling of wax blobs that resemble hot lava. Lava lamps in general, are tube shaped lighting systems, which contain water and a colorful, oily liquid, which breaks up into various shapes and sizes that rise and fall inside the tube when heat is applied. The lava lamps works on insoluble substances. Water and oil are insoluble substances. They differ in their densities as well. Water weighs much more than oil. But the densities are very different. Look out for two other liquids which are insoluble and very close in density. The narrow glass bottle contains water and a combination of translucent wax, carbon tetrachloride or any other combination. The density of wax at room temperature is more than the water and less dense in warmer conditions. This happens because on heating water does not expand like the wax. The combinations used in lava lamp include different types of oil and soluble colorants. A hydrophobic solvent is also added to help lava combine. Paints and turpentine also work well. To fasten up the warming process anti-freezing ingredients are also added.

When heat is applied at the bottom in the lava lamps, the liquid that is heavier absorbs heat and expands. As it is expanding the liquid reduces its density level. Since the liquids have very close densities, when the heavier liquid turns lighter it begins to rise, on cooling. Thus making it denser and heavier and as a result it sinks. All this happens at a very slow pace because dissipation and heat absorption are very slow processes and the density change is very slight.

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