Demonstration Electroscope

Item #P6-1170

$45.00 Bundle Discount

Unit Price	$45.00
6+	$42.30

Make electric charge visible

The Demonstration Electroscope is a precise, classroom-friendly instrument for exploring electric charge and electrostatic phenomena. Its aluminum, needle-based design offers a clear advantage over traditional leaf electroscopes—the needle stays put during experiments instead of fluttering—making observations easier to see and results more reliable. Compact and ultra-sensitive, it’s ideal for front-of-class demonstrations and student investigations alike.

Why Teachers Love the Demonstration Electroscope

Stable, easy-to-see readings: The needle remains steady, eliminating the flutter common with leaf electroscopes.
High sensitivity: An ultra-responsive needle pivots smoothly when charge is applied to the top disk.
Durable, compact design: Built for frequent classroom use with a small footprint.
Clear demonstrations: Makes subtle electrostatic effects visible to the whole class.

Blog Posts

Demonstration of The Photoelectric Effect!

Resources

Demonstration Electroscope Instructional Guide

How the Demonstration Electroscope is Used to Show the Photoelectric Effect

The Demonstration Electroscope provides a straightforward way to illustrate the photoelectric effect conceptually:

Charge the electroscope: Apply an electric charge to the top disk so the needle deflects.
Illuminate with light: Shine light of different frequencies (e.g., ultraviolet vs. visible) onto the charged surface.
Observe discharge: Higher-frequency light causes the needle to move back toward neutral as electrons are emitted from the surface.
Compare frequencies: Students see that not all light causes discharge—demonstrating that electron emission depends on light frequency, not just intensity.

By providing a stable, sensitive indicator of charge, the Demonstration Electroscope makes this cornerstone concept of modern physics clear and observable in the classroom.