J4 Capacitance and Polarization

These demonstrations and models present how capacitors work and how they are used to store energy, and the polarization of electrical charges in matter.

Articles
Image	Title
	J4-01 PARALLEL PLATE CAPACITOR Demonstrates that potential difference across a capacitor is proportional to the plate separation
	J4-03: PARALLEL PLATE CAPACITOR - SERIES CAPACITORS Demonstrate the effect of capacitors in series.
	J4-04 PARALLEL PLATE CAPACITOR - IONIZATION OF AIR Demonstrates the mobility of ions
	J4-12: ELECTROSTATIC FORCE - MOVING LUMBER Demonstrate polarization of water molecules.
	J4-13: MATCHSTICK ON NICKLE UNDER GLASS A simple trick easily solved with the application of electrostatic force and the polar nature of water molecules.
	J4-21: COLOR FILTER MODEL OF CHARGED DIELECTRIC Represent charge separation in a capacitor dielectric.
	J4-22 PARALLEL PLATE CAPACITOR WITH DIELECTRIC Demonstrates that inserting a dielectric into a capacitor increases the capacitance
	J4-23: POLARIZATION OF DIELECTRIC - DISSECTIBLE LEYDEN JAR Demonstrate that energy is stored in a capacitor as charge separation in the dielectric.
	J4-24: FORCE ON DIELECTRIC IN ELECTRIC FIELD Demonstrate the force on a dielectric in an electric field.
	J4-31 ENERGY STORED IN A CAPACITOR Demonstrates that energy is stored in a capacitor and how that energy may be used
	J4-32 DISCHARGE OF CAPACITOR WITH BANG Demonstrates that capacitors store electrical energy
	J4-41: CAPACITORS Display a variety of capacitors
	J4-42: CAPACITORS IN SERIES AND PARALLEL Demonstrate the voltage/charge/capacitance relationships in series and parallel capacitor circuits.
	J4-43: CAPACITORS IN SERIES AND PARALLEL WITH PROJECTION METER Illustrate voltage relations in series and parallel capacitor circuits.
	J4-51: THEREMIN Demonstrate the theremin

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J4 Capacitance and Polarization