Make DIY light bulb from a pencil lead💡 @Stefano91ste
Make DIY light bulb from a pencil lead💡  @Stefano91ste
Uploaded May 2025 | Updated September 2026, 3 weeks ago
In this experiment I created an incandescent light bulb using graphite as a filament. Already at 5v DC the current absorption is very high.

After a few seconds the filament breaks because it burns, unlike the tungsten (W) used in classic light bulbs that while becoming incandescent, does not burn.

This video is only for demonstration. I don't take any responsibility💡

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Make DIY light bulb from a pencil lead💡

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