Projection Gold-Leaf Electroscope (early 1900s)
Gold leaf electroscope (ca. 5" tall and 8" long) for qualitative demonstrations of electrostatic phenomena. The lamp is protected by the horizontal cylindrical housing on the right. An image of the gold leaf and its supporting rod is projected through the lens and onto a screen for easier viewing. In this example, only a fragment of the (single) gold leaf remains. The body is made of black painted brass.
In general, an electrophorus would be used to transfer a charge to the horizontal disk (Volta plate) on the top. For an explanation of how an electroscope can be charged and how an electrophorus works, click here.
Manufactured by Philip Harris Ltd. of Birmingham England.
Last updated: 07/25/07
Copyright 1999, Oak Ridge Associated Universities