plasma pen

  • GadgetsPlasma Pen

    How Does The Plasma Pen Work?

    If you’re ever in a situation where you need to write something down quickly, like when you’re in class or talking on the phone, a plasma pen could come in handy. Plasma pens use an electric current to create a thin stream of ink that quickly disappears on paper. In this article, we’ll learn how plasma pens work and see…

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