Smoke Cell – Brownian Motion Demonstration Apparatus (KS4+)

This Smoke Cell Apparatus is designed for clear, engaging demonstrations of Brownian Motion, making it ideal for KS4 and above. The unit allows students to observe the random motion of smoke particles under a microscope, providing direct visual evidence for the kinetic theory of matter.

The apparatus consists of a compact smoke cell box with a plastic lid and microscope‑mounting flanges, allowing easy and secure attachment to standard microscopes. Inside the unit is a precision‑aligned cylindrical condensing lens and a 12 V, 3 W festoon bulb. The optical components are pre‑set to ensure that the light is focused at the correct height for optimal particle visibility.

A squeeze‑bottle smoke generator is included to introduce smoke into the chamber quickly and safely. The set also comes with detailed instructions to support teachers and technicians in achieving consistent and effective results.

The Better Equipped Student Microscope (code 1823) is compatible and recommended for use with this smoke cell.

Key Features

• Demonstrates Brownian Motion clearly for KS4+ physics
• Smoke cell box with plastic lid and flanges for secure microscope mounting
• Built‑in cylindrical condensing lens for optimal illumination
• 12 V, 3 W festoon bulb provides bright, even lighting
• Factory‑set optical alignment for correct focal height
• Includes squeeze‑bottle smoke generator
• Supplied with detailed instructions
• Compact dimensions: 100 × 59 × 27 mm (H)
• Compatible with the Better Equipped Student Microscope (code 1823)

Ideal for School Science Lessons

Perfect for KS4–KS5 physics, this smoke cell supports:

• Direct observation of Brownian Motion
• Understanding the kinetic theory of matter
• Visualising the movement of particles suspended in a fluid
• Reinforcing concepts of random motion, collisions, and heat energy
• Demonstrations of foundational ideas leading to molecular theory

Reliable, easy to use, and highly effective for visual learning, this Smoke Cell Apparatus is an essential resource for teaching particle behaviour and kinetic theory in school science.