2.4 Experiment: The Voltaic Pile Humphry Davy s Voltaic Pile Sidebar Experiment: Electroplating Experiment: Potato
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1 Contents 1 Home Electrostatics Static Electricity A Charge Detector Using Plastic Wrap What Has Happened Experiment: Two Plastic Strips What Is Happening Atoms Experiment: Bending Water Dipoles Experiment: Comb and Paper What Has Happened Making a Kitchen Electroscope Experiments with the Kitchen Electroscope What Has Happened Leyden Jar: Capacitors E Fields Experiment with Electroscope and Leyden Jar What Has Happened Experiment: Charging by Inducing Charges (May Be Omitted with No Loss of Continuity) What Has Happened More on Conductors and Insulators What Happened Lightning: Franklin s Bells and More Current and Voltage Water Analogy Galvani s Frogs Legs, and Volta s Experiment Tongue Experiment (After Volta) Experiment: Voltaic Cell vii
2 viii Contents 2.4 Experiment: The Voltaic Pile Humphry Davy s Voltaic Pile Sidebar Experiment: Electroplating Experiment: Potato Battery What Was Happening Amps, Volts, Energy, Power Experiment: Current Through a Bulb What Is Happening A Fuse Making a Current Meter Another Way to Get a Voltage: Seebeck Effect Peltier Effect Yet Another Way to Get a Voltage: Piezoelectricity L.E.D.s vs. Bulbs Concept of Resistance Ohm s Law A Graph for Ohm s Law Experiment: Resistance of a Household Bulb What Was Happening Equivalent Definition of Power Lighting the LED The Solar Cell: A (Part-Time) Battery More on pv Cells (Solar Cells or Photodiodes) Actual Solar Cells from the Stores Note on Rechargeable Batteries: NiCad, NiMH, Li-Ion Nickel Cadmium (NiCad) Nickel-Metal Hydride (NiMH) Lithium-Ion (Li-Ion) A Charging Circuit, and a Difficulty Brief History of Electrical Diodes More Symbols Comment on the Various Uses of LEDs: Series and Parallel: Water Analogy Elements of Automobile Wiring Current Measurements Voltage Measurements Resistance Measurements Alternating Current and Direct Current (AC and DC) Skin Effect An AC Experiment with LEDs Magnetism Lodestones The North Further View of Magnetism
3 Contents ix 3.3 A Kitchen Compass Angle of Dip Diamagnetism Paramagnetism Ferromagnetism Shielding Different Magnet Shapes Aurora Borealis Magnetic Bacteria Tapes and Swipe Cards What Causes a Magnetic Field? Oersted s Experiment Shape of the Field Due to a Loop A Coil Experiment Inductance (L) A House Alarm Experiment: Force on a Current Near a Magnet (Lorentz Force) Direction of Lorentz Force A Kitchen Motor Adjacent Currents A Gedanken Experiment Lorentz Force with Old TVs (Not New Ones!) Hall Effect Magnetohydrodynamics (or MHD) Note on Microwave Ovens: A Subtle Example of the Lorentz Force A Kitchen Experiment with Microwaves Relative Motion of a Magnet and a Wire (Faraday s Law) Note on e.m.f.s Transformers: An Example of Faraday s Law Two Examples of Transformers Electromagnetic Waves The Electromagnetic Spectrum Making a Kitchen Radio Experiment: Falling Magnet What Was Happening Note on Neodymium Magnets Eddy Currents, ARAGO, and a Kitchen Cooker A Household Generator Elements of Transistors, and an Integrated Circuit First We Must Revisit the Diode! n-type Material p-type Material
4 x Contents 4.2 The pn Junction Experiment: Diode Graph About Displays Comment on LCDs The Transistor Experiment: Transistor as Switch What Has Happened Experiment: Transistor as Amplifier Setting Up the Circuit An Absolute Electroscope Using the Absolute Electroscope What Is Happening Connection Between Fields and Potentials Experiment: Charging and Discharging Capacitors Integrated Circuits: The 555 Timer Chip Experiment: A Metronome Circuit Appendix A: Resistor Color Codes Appendix B: Components Appendix C: RFID and Bar Codes Appendix D: E-Ink Appendix E: Touchscreens Appendix F: Formulae Glossary Index Authors Biography
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