Electroscope
device · 1600 · Early modern era
A charge indicator (Gilbert).
What it is made of
- Metal rod with knob — has part. It conducts the charge.
- Gold leaf foils — has part. They spread apart when charged.
- Glass jar — has part. It protects against air movement.
Principles and materials it uses
- Static electricity — uses. The leaves repel each other.
- Glass — is made of. An electroscope is a glass vessel.
- Gold — is made of. With leaves of gold leaf.