How Backup Lamp Glows Without Electricity? | The science Behind It
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If an inverter bulb glows when held in your hand, it's likely due to the sensitivity of the bulb's circuitry to the electrical charge or current that your body can carry. Modern LED bulbs, especially those designed for smart lighting, incorporate capacitive touch-sensing technology. This technology allows the bulb to respond to touch or changes in capacitance. When you touch the bulb, your body's capacitance changes, and the bulb's sensor detects this change, triggering it to turn on or change brightness. Essentially, it interprets your touch as a command.