------------------------------------------------------------------------ PHY 184 Recommended demos ------------------------------------------------------------------------ Wk Topics and Demos 01 Electric Charge, Electric Fields - Two types of electric charge - Van de Graaff generator and wig - Wimshurst machine - Electric field lines - Pith balls inside a conducting cylinder - Faraday's ice pail - Faraday cage - Styrofoam shower 02 Electric Fields, Gauss' Law - Electrostatic induction: two charges from one - Polarizing water - Obedient ruler - Dipole models - Electrostatic ping-pong - Sharp conductor - Electric whirl - Cylindrical Gaussian surface model 03 Electric Potential - Rubber sheet potential model - Dipole models 04 Capacitance - Dissectable Leyden jar - Types of capacitors - Big spark - Parallel plate capacitor - Dielectrics 05 Current and Resistance - Electrostatic ping-pong - Marbles and nails model of resistance - Current in molten glass - Jacob's ladder - Potentiometers - Potential along a long wire - Ohm's law 06 Circuits - Series and parallel light bulbs - Wheatstone bridge - Time constant in an RC circuit - Lemon juice battery 07 Magnetic Fields - Compass needle, lodestone, magnets - Earth's magnetic field (model) - Overhead projector magnetic field lines - Compass needle array (ohp) - Walking the paper clip 08 Magnetic Fields Due to Currents - Oersted's experiment - Magnetic field from a current - Magnetic field of a solenoid - Picking up nails with a solenoid - Hanging coil in a magnetic field - Jumping wire - Parallel wires 09 Induction and Inductance - Coil, magnet and galvanometer - Wire cutting a magnetic field - Inductive seesaw - Energy bike: generating electricity - Genecons - Eddy current braking - Lenz's law pipes - Eddy current pennies - Jumping ring 10 Magnetism of Matter - Compass needle array (ohp) - Spatula in magnet - Reversing the poles - Picking up nails with a solenoid - Barkhausen effect - Curie point - Meissner effect 11 Electromagnetic Oscillations and AC - Induced light - Diode board - Switching paradox - Visual RLC resonance 12 Electromagnetic Waves - Spark radio - Radio in a Faraday cage - Inverse square model - Polaroid sun glasses - Scotch tape polarization - Polarmotion - Karo syrup polarization - Refraction tank - Broken finger - Total internal reflection rod - Fire water - Dispersion: prism and slide projector 13 Images - Arrows of reflection (model) - How tall a mirror ? - Angle mirrors - Concave and convex mirrors - Images in spherical mirrors - Magnifying and reducing glasses - Image from a simple lense - Edmund mirage - Human eye model 14 Interference - Bead board model of superposition - Interference patterns on overhead - Meter stick model of interference - Newton's rings on overhead projector 15 Diffraction - Single and multiple slit diffractions - Hinged arrows and rubber tube models - Red and green diffraction - Shrinking mirror - Diffraction grating - Babinet's hair - Diffraction by a circular object (video) - Circular aperture - Continuous and discrete spectra ------------------------------------------------------------------------