Product Overview
This enclosed-form Coulomb’s Law apparatus offers an economical and semi-quantitative way to explore electrostatic repulsion and the inverse-square nature of electric force. Designed for classroom use, it allows students to investigate the repulsion between two similarly charged spheres and to estimate force via measured deflection angles.
A lightweight, conductively coated Styrofoam sphere is suspended inside a draft-shielded acrylic chamber. A solid metal test sphere moves along a grooved guide block on the base, allowing for controlled position adjustments. Deflections are read against an angular scale (0°–70°) printed on the front window, and a linear 10 cm internal scale aids in determining distance between the spheres.
Charge is typically introduced by rubbing a hard rubber rod with a fur or wool pad. A third solid metal sphere on an insulating handle is included for modifying the charge distribution within the chamber.
The clear, all-plastic construction minimizes interference from air currents while allowing 360° visibility. A grounding feature eliminates deflections due to residual chamber charges.
Dimensions (W × D × H): 165 × 90 × 135 mm
Includes: Apparatus, third sphere with insulating handle, and instructions.
Ideal for visualizing fundamental principles of electrostatics and providing hands-on context for Coulomb’s Law.
