| A+0+0 | "Coin and Feather" fall in an evacuated rotatable tube. | 2021-01-11 |
| D+10+6 | Attraction and repulsion of charged styrofoam balls. | 2021-06-21 |
| D+10+8 | Braun and Leaf electroscopes. | 2021-06-21 |
| D+10+14 | Charging an electroscope by induction. | 2021-06-21 |
| D+10+24 | Electrostatic pinwheel:Van de Graaff makes pinwheel spin. | 2021-06-21 |
| D+10+0 | Electric fields: Lines of force shown on an OHP. | 2021-06-22 |
| D+10+28 | Electrostatic doorbell: Ball bangs between charged plates. | 2021-06-22 |
| D+10+24 | Electrostatic pinwheel:Van de Graaff makes pinwheel spin. | 2021-06-22 |
| D+10+25 | Like Charges Attract | 2021-06-22 |
| A+70+5 | Vector arrows of various sizes and colors fit in wooden bases. | 2021-06-23 |
| D+10+12 | Charge resides on the outside of a conductor. | 2021-06-23 |
| A+70+5 | Vector arrows of various sizes and colors fit in wooden bases. | 2021-06-24 |
| D+10+12 | Charge resides on the outside of a conductor. | 2021-06-24 |
| A+70+5 | Vector arrows of various sizes and colors fit in wooden bases. | 2021-06-29 |
| D+10+22 | Wimshurst machine, large or small. | 2021-06-29 |
| D+75+8 | Large Jacob's ladder. | 2021-06-29 |
| D+0+4 | Parallel plate capacitor with dielectric materials and electroscope. | 2021-06-30 |
| D+0+2 | Various capacitors to show. | 2021-06-30 |
| D+0+16 | Discharging a capacitor through a lamp. | 2021-06-30 |
| D+0+28 | Energy storage in a commercial capacitor. Loud bang! | 2021-06-30 |
| D+10+22 | Wimshurst machine, large or small. | 2021-06-30 |
| D+55+18 | Resistor analog: Marbles cascading down pin board. | 2021-07-01 |
| D+55+2 | Watt's law: Variable resistor, glow coil, volt and amp meter. | 2021-07-01 |
| D+55+6 | Resistance thermometer: Iron coil in liquid Nitrogen and flame varies current. | 2021-07-01 |
| D+55+4 | High current melts the fuse wire. | 2021-07-01 |
| D+55+18 | Resistor analog: Marbles cascading down pin board. | 2021-07-06 |
| D+0+30 | Oscillator made with resistor, capacitor and neon lamp. | 2021-07-06 |
| D+45+2 | Elementary split-ring armature DC motor. D+15+6 as a motor. | 2021-07-07 |
| D+30+8 | Compass needle shows field around a high current wire on bench top. | 2021-07-07 |
| D+30+24 | Vacuum tube with screen shows cathode rays bent with a magnet. | 2021-07-07 |
| D+30+26 | E/M tube: Circular bending of an electron beam in a magnetic field. | 2021-07-07 |
| D+30+20 | Elementary motor: Bar on rails over solenoid with core. | 2021-07-07 |
| D+30+18 | Force on a current carrying wire in a magnetic field. | 2021-07-07 |
| D+30+6 | Iron filings and permanent magnets to show field on an OHP. | 2021-07-12 |
| D+30+10 | Iron filings around a high current vertical wire on OHP to show field. | 2021-07-12 |
| D+30+12 | Iron filings around a current carrying coil on OHP to show field. | 2021-07-12 |
| D+15+0 | Bar magnet induces current in a coil, shown on galvanometer. | 2021-07-13 |
| D+15+2 | Elementary generator: Bar moved in magnetic field. | 2021-07-13 |
| D+15+8 | Alternator: Coil with AC commutator rotates between magnets. | 2021-07-13 |
| D+15+11 | Hand-cranked DC generator powers 120 volt lamp. | 2021-07-14 |
| D+15+24 | Levitator: Aluminum dish floats four inches off platform. | 2021-07-14 |
| D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2021-07-14 |
| D+20+0 | Energy stored in large coil with soft iron core flashes bulb. | 2021-07-15 |
| D+30+14 | Magnetic field around a solenoid with pivoting probe magnet. | 2021-07-15 |
| D+75+4 | Large Tesla coil. 15 inch discharge. | 2021-07-15 |
| D+5+10 | 85 MHz radio transmitter, with indicating lamp on dipole antenna. | 2021-07-19 |
| D+5+32 | Plexiglas model of electromagnetic wave. | 2021-07-19 |
| E+45+60 | Polarized light and stressed lucite on an OHP. | 2021-07-20 |
| E+60+5 | Total internal reflection/critical angle: Nakamura water tank. | 2021-07-20 |
| E+60+15 | Light pipes and fiber optic flashlight. | 2021-07-20 |
| E+45+25 | Commercial Polaroid filters on an OHP. | 2021-07-20 |
| E+40+10 | Phantom lightbulb: Image in a plane mirror. | 2021-07-21 |
| E+40+30 | Reflections from concave and convex mirrors with lighted arrow. | 2021-07-21 |
| E+50+15 | Blackboard optics: Light source and lucite prism. | 2021-07-21 |
| E+30+15 | Real images: Lighted arrow image and various lenses. | 2021-07-21 |
| E+60+5 | Total internal reflection/critical angle: Nakamura water tank. | 2021-07-21 |
| E+60+15 | Light pipes and fiber optic flashlight. | 2021-07-21 |
| E+30+15 | Real images: Lighted arrow image and various lenses. | 2021-07-22 |
| E+50+15 | Blackboard optics: Light source and lucite prism. | 2021-07-22 |
| E+40+30 | Reflections from concave and convex mirrors with lighted arrow. | 2021-07-22 |
| E+30+15 | Real images: Lighted arrow image and various lenses. | 2021-07-26 |
| B+35+5 | Acoustic interference with Quincke (trombone) tube and sonalert. | 2021-07-27 |
| E+25+0 | Large wood model of a double slit with hinged waves. | 2021-07-27 |
| E+30+65 | Model of the eye, with near/far sight lenses, using arc lamp. | 2021-07-27 |
| E+25+20 | Red/green/blue line source viewed with double slit paddles. | 2021-07-27 |
| E+25+15 | Laser beam through various slit and grating combinations. | 2021-07-27 |
| E+25+40 | Soap film interference: The soap bubble experiment on arc bench. | 2021-07-28 |
| E+10+5 | Laser beam through sets of 1, 2, or multiple electro-formed slits. | 2021-07-28 |
| E+10+5 | Laser beam through sets of 1, 2, or multiple electro-formed slits. | 2021-08-02 |
| E+10+45 | Limit of resolution: Two small lamps on adjustable slide. | 2021-08-02 |
| E+15+25 | Hand-held gratings for class to view Hg, Ne discharge tubes. | 2021-08-02 |
| F+10+0 | Electron diffraction by aluminum and graphite on CRT. | 2021-08-03 |
| F+15+5 | Light through different filters into phototube changes current. | 2021-08-03 |
| F+15+20 | Commercial solar cell spins propeller using halogen light source. | 2021-08-03 |
| F+30+0 | Tunneling:Microwave analogy using wax prisms. | 2021-08-04 |
| E+15+25 | Hand-held gratings for class to view Hg, Ne discharge tubes. | 2021-08-04 |
| E+15+25 | Hand-held gratings for class to view Hg, Ne discharge tubes. | 2021-08-05 |
| F+20+5 | Rutherford scattering model: Steel balls, launcher, and "hill". | 2021-08-09 |
| F+80+0 | Mousetrap chain reaction experiment. | 2021-08-10 |
| F+65+5 | Geiger counter. | 2021-08-10 |
