| F+85+0 | YBaCuO pellet with magnet in liquid nitrogen on TV camera. | 2021-04-29 |
| D+0+2 | Various capacitors to show. | 2021-02-09 |
| E+60+40 | Variable index of refraction: laser beam bends in water tank with sugar. | 2021-04-01 |
| D+30+24 | Vacuum tube with screen shows cathode rays bent with a magnet. | 2021-02-23 |
| D+30+24 | Vacuum tube with screen shows cathode rays bent with a magnet. | 2021-02-25 |
| E+60+5 | Total internal reflection/critical angle: Nakamura water tank. | 2021-03-30 |
| E+60+5 | Total internal reflection/critical angle: Nakamura water tank. | 2021-04-01 |
| D+30+22 | Torque on coil suspended between two magnets. | 2021-03-02 |
| E+25+40 | Soap film interference: The soap bubble experiment on arc bench. | 2021-04-15 |
| D+5+12 | Seibt effect: Wire wound glass tube with 510 transmitter. | 2021-03-18 |
| D+55+14 | Same as D+55+12 using oscilloscope to display waveform. | 2021-02-18 |
| D+0+34 | Same as D+0+30 using oscilloscope to display waveform. | 2021-02-16 |
| E+25+5 | Ripple tank with plane or spherical water waves and barriers. | 2021-04-13 |
| D+55+18 | Resistor analog: Marbles cascading down pin board. | 2021-02-11 |
| D+55+18 | Resistor analog: Marbles cascading down pin board. | 2021-02-16 |
| E+40+30 | Reflections from concave and convex mirrors with lighted arrow. | 2021-04-06 |
| E+30+15 | Real images: Lighted arrow image and various lenses. | 2021-04-08 |
| D+5+32 | Plexiglas model of electromagnetic wave. | 2021-03-16 |
| D+5+32 | Plexiglas model of electromagnetic wave. | 2021-03-18 |
| E+40+10 | Phantom lightbulb: Image in a plane mirror. | 2021-03-30 |
| E+40+35 | Phantom bouquet: Real image from a concave mirror. | 2021-03-30 |
| D+0+30 | Oscillator made with resistor, capacitor and neon lamp. | 2021-02-23 |
| E+15+10 | Mercury spectrum using slit and grating, includes UV lines. | 2021-04-22 |
| F+15+5 | Light through different filters into phototube changes current. | 2021-04-20 |
| C+65+2 | Light the Match. | 2021-04-20 |
| D+15+24 | Levitator: Aluminum dish floats four inches off platform. | 2021-03-11 |
| E+25+15 | Laser beam through various slit and grating combinations. | 2021-04-13 |
| E+25+15 | Laser beam through various slit and grating combinations. | 2021-04-15 |
| E+25+15 | Laser beam through various slit and grating combinations. | 2021-04-22 |
| E+25+15 | Laser beam through various slit and grating combinations. | 2021-04-27 |
| D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2021-03-11 |
| D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2021-03-16 |
| D+30+10 | Iron filings around a high current vertical wire on OHP to show field. | 2021-03-02 |
| D+30+6 | Iron filings and permanent magnets to show field on an OHP. | 2021-02-23 |
| D+55+4 | High current melts the fuse wire. | 2021-02-16 |
| D+55+4 | High current melts the fuse wire. | 2021-02-18 |
| D+0+5 | Force on a dielectric in a capacitor | 2021-02-11 |
| D+30+18 | Force on a current carrying wire in a magnetic field. | 2021-02-25 |
| E+15+0 | First and second order transmission gratings, with arc lamp. | 2021-04-15 |
| D+10+10 | Faraday's ice pail: Charge induced on the outside of a pail. | 2021-01-28 |
| D+10+10 | Faraday's ice pail: Charge induced on the outside of a pail. | 2021-02-02 |
| D+10+10 | Faraday's ice pail: Charge induced on the outside of a pail. | 2021-02-04 |
| D+0+28 | Energy storage in a commercial capacitor. Loud bang! | 2021-02-09 |
| F+15+15 | EMF generated by phototube using halogen light source. | 2021-04-20 |
| D+45+2 | Elementary split-ring armature DC motor. D+15+6 as a motor. | 2021-03-04 |
| D+45+2 | Elementary split-ring armature DC motor. D+15+6 as a motor. | 2021-03-09 |
| D+45+10 | Elementary motor: Magnets and battery and copper coil make a simple motor. | 2021-03-04 |
| D+30+25 | Elementary motor: De La Rive Tube. | 2021-03-04 |
| D+15+2 | Elementary generator: Bar moved in magnetic field. | 2021-03-09 |
| D+15+2 | Elementary generator: Bar moved in magnetic field. | 2021-03-11 |
| F+10+0 | Electron diffraction by aluminum and graphite on CRT. | 2021-04-22 |
| D+10+0 | Electric fields: Lines of force shown on an OHP. | 2021-01-21 |
| D+30+26 | E/M tube: Circular bending of an electron beam in a magnetic field. | 2021-03-02 |
| D+30+26 | E/M tube: Circular bending of an electron beam in a magnetic field. | 2021-02-25 |
| E+60+0 | Displacement of a beam passing through a thick plate of glass. | 2021-04-01 |
| E+10+15 | Diffraction about pinhead, razorblade, wood screw using laser. | 2021-04-15 |
| F+15+20 | Commercial solar cell spins propeller using halogen light source. | 2021-04-20 |
| E+45+25 | Commercial Polaroid filters on an OHP. | 2021-04-01 |
| D+10+12 | Charge resides on the outside of a conductor. | 2021-01-28 |
| D+10+12 | Charge resides on the outside of a conductor. | 2021-02-02 |
| D+10+12 | Charge resides on the outside of a conductor. | 2021-02-04 |
| D+0+6 | Capacitor doorbell driven by Van de Graaff generator. | 2021-01-19 |
| D+10+8 | Braun and Leaf electroscopes. | 2021-01-19 |
| D+10+8 | Braun and Leaf electroscopes. | 2021-01-21 |
| E+40+5 | Blackboard optics: Light sources with plane and curved mirrors. | 2021-03-30 |
| E+40+5 | Blackboard optics: Light sources with plane and curved mirrors. | 2021-04-01 |
| E+40+5 | Blackboard optics: Light sources with plane and curved mirrors. | 2021-04-06 |
| E+30+10 | Blackboard optics: Light sources with lucite lenses. | 2021-04-08 |
| D+0+1 | Attraction between plates of a capacitor causes attachment of plates when insulator is introduced. | 2021-02-09 |
| D+10+6 | Attraction and repulsion of charged styrofoam balls. | 2021-01-19 |
| E+30+45 | Astronomical telescope: Using objective and eyepiece lenses. | 2021-04-08 |
| D+30+16 | Ampere's law: Currents in parallel wires attract or repel. | 2021-03-02 |
| D+5+10 | 85 MHz radio transmitter, with indicating lamp on dipole antenna. | 2021-03-16 |
| D+5+10 | 85 MHz radio transmitter, with indicating lamp on dipole antenna. | 2021-03-18 |
