A lava-lamp consists of a light bulb which thermically heats the liquid in a container above. As the light source is a light bulb, a lava-lamp emits alternating electric and magnetic fields at a fundamental frequency of 50 Hz resp. 60 Hz.
| Measurand | Value | Feature | Remarks |
|---|---|---|---|
| magnetic flux density | 0.02 µT (measured) | - | at a distance of 10 - 50 cm; measurement bandwidth: 0 - 3000 Hz [1] |
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