Low-Cost Award Winners ($100 Award)

• Apparatus for Determination of Diffusion Coefficient by Refringence Variation
• Piezo-Charger
• Temperature Variation of Resistance
• A Low-Cost, Battery-Powered Precession Generator Which Permits Extended Periods of Student Manipulation
• Apparatus Demonstrating the Dynamics of the Chatter Ring Toy
• An Equipotential PCB (Printed Circuit Board)

• An AC, Shaded Pole, Induction Motor for the Overhead projector or table top display.
• Hero's fountain
• Gray's Lights
• Handy, Self-Contained E=hf Demonstrator
• The Light Show Polarizer Rotator
• Laser Beam Modulator
• Color Cubes for Decay Simulation

2nd Place ($600 award)

• A Modified Binary Eclipsing Star System Model
• Pneumatic Ripple Tank

• Strings and Springs 1-D Mechanical Analogy to Quantum Mechanics

Other AL/LD Entries

• The Travelling Light Show
• Handy, Self-Contained E=hf Demonstrator
• Faraday's Law Demonstration
• Why Cats Land on their Feet, a Demonstration of Conservation of Angular Momentum
• Quantitative Desktop Doppler Shift Demonstration with An Inkjet Printer
• Alternating Current Analyzer for Lecture or Lab
• Polarization of reflected light
• Homopolar Motor/Generator
• Shattering the Wineglass
• The Light Show Polarizer Rotator
• A Low-Cost, Battery-Powered Precession Generator Which Permits Extended Periods of Student Manipulation
• An Equipotential PCB (Printed Circuit Board)