electroscope aluminum leaves
Date: circa 1940
Inventory Number: 2003-1-0177
Classification: Accessory
Subject:
Maker: Hammer Laboratories (fl. 1920 - 1950)
Maker: Central Scientific Company (1889 - 2000)
Cultural Region:
Dimensions:
one envelope: 6.5 × 11.7 × 0.5 cm (2 9/16 × 4 5/8 × 3/16 in.)
Description:
Extremely thin aluminum foil leaves stored in three separate envelopes. Each originally contained 12 of these foils.
Signedon white envelope: Hammer Laboratories
on brown envelopes: Central Scientific Company
on brown envelopes: Central Scientific Company
FunctionUsed in electroscopes, designed to measure the amount of electric charge on a body's surface. These aluminum foils would gather electricity and separate from one another at an angle. The angle separation provides a measure of the amount of electricity.