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A lava lamp is a fascinating decorative piece that can deliver not only illumination but much fun and entertainment as well. The exact makeup of lava is a secret but generally, it’s a blend of wax and oils that do not mix together. This combo is housed in a glass vessel with a halogen bulb underneath. This bulb heats up the wax within. Any lamp has a thoughtful design with a few inches left on the top for the gases that need some space for expanding.

More info about problems of a lava lamp: https://www.bestadvisor.com/how-to/how-to-fix-lava-lamp-problems

Liquids and wax have different densities and are completely insoluble with each other. And when you apply heat at the bottom (turn on the bulb), it produces liquid motion. When the wax absorbs the heat, it slowly expands. Once it happens, lava becomes less dense and slowly rises in the flowing motion. It takes approximately 40-50 minutes for the blobs of wax to form beautiful shapes. As soon as the wax cools down, it comes back at the bottom of the lamp again, forming a hole.

However, if you notice that the flow isn’t as lively as expected, this means your lamp is not working correctly. The most common issues owners have are clouded water and the lava stopped moving. Luckily, there are some things you can do to restore a lava lamp.
 
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