Science

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Can wood, silver or yarn light up a light bulb? I think wood can carry a current.

  • Science -

    Do you mean as heated filaments? In the presence of oxygen? Some of Edisons's first and longest-lived bulbs used carbon filaments.

    Wood cannot carry current unless it is wet.

  • Science -

    I guess if all four switches were turned on.Would just just silver ? Why wouldn't yarn? I understand wood when it is wet that makes sense.

  • Science -

    I did not realize you were talking about switches to turn on and off a light bulb.

    Silver should work as the blaDE and contacts of a knife switch; the others won't.

    See

    http://catalog.miniscience.com/catalog/electricity/Knife_Switch.html

  • Science -

    Thank you! I will read the link and study. Might have other questions maybe.

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