Electroscope, Dual Purpose

A Dual Purpose Electroscope is a versatile physics instrument primarily used to detect the presence and nature of electric charges. It typically consists of a vertical metal rod housed in a protective case, featuring a metal plate or sphere at the top and thin, flexible leaves (often gold or aluminium) at the bottom.

The "dual purpose" designation generally refers to its ability to serve two core scientific functions:

• Qualitative Detection: It serves as a sensitive detector to identify if an object is electrically charged and to determine the polarity (positive or negative) of that charge.
• Quantitative Measurement: Unlike basic models, it often includes a graduated scale that allows users to measure the specific angle of leaf deflection, providing a relative measure of the charge's strength or voltage.

Key Features

• Sensitive Leaves: Uses thin gold or aluminium foil that diverges due to electrostatic repulsion when charged.
• Transparent Scale: An internal scale allows for consistent, comparative readings of charge magnitude.
• Protective Housing: Usually built with a metal or wooden case and glass windows to shield the delicate leaves from air currents and moisture.
• Earthing Terminal: Many models include a 4mm socket for earthing, which is essential for experiments involving charging by induction or for neutralizing the device.
• Ionisation Chamber: The sliding glass panels allow for the insertion of ionising materials, enabling it to detect ionizing radiation.

Product of India