If a piece of paper is then heated over a lamp or stove and rubbed with a piece of cloth or a small broom, the arrow will turn when the paper is brought near it.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiAaMXFhmRcOFQ8iqh9ZVA5vKu6wy94Qqd2LVSx41ZX6nlnL0sA9FYFNXUwpEMWD9Zf0n2GBrxLXdoEY7c3KZPQ6yPVKYK9uwqAEgqaPhyphenhyphenw_B0c6szte6BjTS2XUy4mE6Vd56iV-Nn0kes/s1600/01-How-to-Make-an-Electroscope.jpg)
Simple Electroscope
Excerpt from the book:
THE BOY MECHANIC
VOLUME I
700 THINGS FOR BOYS TO DO
WITH 800 ILLUSTRATIONS
1913, BY H. H. WINDSOR CHICAGO
POPULAR MECHANICS CO. PUBLISHERS
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