A potato battery is an electrochemical battery, or an electrochemical cell in which a chemical reaction occurs in a liquid between two different metals. When a wire is placed to connect the metals, it carries an electrical current. An electrochemical cell converts chemical energy to electric energy. This plastic clock has two compartments designed to hold potatoes or fruit. Two coils (one red and one blue) are inserted into a different potato while the green coiled wire is connected to both potatoes. This will then make the clock start working. This is an excellent demonstration clock to use in the science classroom!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
This caffeine molecule mug makes an excellent gift!
Build a model green house and 9 other green energy-related devices with this great kit!
Learn all about the science of light, optics and visual perception with this wonderful kit!
This microscope is so versatile you can even take it with you on a job site!
The Wimshurst Machine is a high quality static machine for student labs.