D+0+12 | Visual charge/discharge of a capacitor through a load. | 2020-09-24 |
D+30+24 | Vacuum tube with screen shows cathode rays bent with a magnet. | 2020-09-29 |
F+15+0 | UV light hits charged zinc plate and discharges electroscope. | 2020-11-17 |
E+60+5 | Total internal reflection/critical angle: Nakamura water tank. | 2020-10-22 |
D+55+18 | Resistor analog: Marbles cascading down pin board. | 2020-09-17 |
D+55+0 | Resistance boards: Series, parallel, Wheatstone bridge. | 2020-09-22 |
E+30+15 | Real images: Lighted arrow image and various lenses. | 2020-10-29 |
E+60+10 | Rainbow: Refraction of white light by a liquid sphere. | 2020-10-22 |
D+10+4 | Pith balls on thread, with positive and negative charged rods. | 2020-08-27 |
E+40+10 | Phantom lightbulb: Image in a plane mirror. | 2020-10-27 |
D+0+10 | Parallel capacitors array: A charged capacitor charges the others. | 2020-09-15 |
E+30+65 | Model of the eye, with near/far sight lenses, using arc lamp. | 2020-11-03 |
E+25+10 | Microwave interference with single and double slits. | 2020-11-05 |
D+35+12 | Linear motor: An iron core jumps into a solenoid. | 2020-10-08 |
E+10+45 | Limit of resolution: Two small lamps on adjustable slide. | 2020-11-12 |
F+15+5 | Light through different filters into phototube changes current. | 2020-11-17 |
E+60+15 | Light pipes and fiber optic flashlight. | 2020-10-22 |
D+15+24 | Levitator: Aluminum dish floats four inches off platform. | 2020-10-15 |
E+25+15 | Laser beam through various slit and grating combinations. | 2020-11-05 |
D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2020-10-15 |
D+30+10 | Iron filings around a high current vertical wire on OHP to show field. | 2020-09-29 |
D+30+12 | Iron filings around a current carrying coil on OHP to show field. | 2020-09-29 |
D+30+6 | Iron filings and permanent magnets to show field on an OHP. | 2020-09-29 |
D+55+4 | High current melts the fuse wire. | 2020-09-17 |
D+30+18 | Force on a current carrying wire in a magnetic field. | 2020-10-01 |
D+45+2 | Elementary split-ring armature DC motor. D+15+6 as a motor. | 2020-10-01 |
D+10+28 | Electrostatic doorbell: Ball bangs between charged plates. | 2020-08-27 |
D+10+0 | Electric fields: Lines of force shown on an OHP. | 2020-08-27 |
D+10+0 | Electric fields: Lines of force shown on an OHP. | 2020-09-01 |
D+0+16 | Discharging a capacitor through a lamp. | 2020-09-15 |
D+0+16 | Discharging a capacitor through a lamp. | 2020-09-17 |
D+15+16 | Damped pendulum: Swinging metal disks damped in magnetic field. | 2020-10-15 |
E+45+25 | Commercial Polaroid filters on an OHP. | 2020-10-27 |
D+10+14 | Charging an electroscope by induction. | 2020-09-03 |
D+10+12 | Charge resides on the outside of a conductor. | 2020-09-03 |
D+15+0 | Bar magnet induces current in a coil, shown on galvanometer. | 2020-10-13 |
D+15+12 | Back EMF in a series DC motor with large flywheel. | 2020-10-13 |
E+30+45 | Astronomical telescope: Using objective and eyepiece lenses. | 2020-11-03 |
D+30+16 | Ampere's law: Currents in parallel wires attract or repel. | 2020-10-01 |
E+10+10 | Airy's disk: Pinhole diffraction using laser beam. | 2020-11-12 |