D+10+20 | Van de Graaff generator. | 2023-07-03 |
C+80+5 | Triple Point demo: Water boils under vacuum making ice. | 2023-06-21 |
C+70+15 | Ring and ball: Ball fits through ring only after ring is heated. | 2023-06-20 |
D+55+18 | Resistor analog: Marbles cascading down pin board. | 2023-07-17 |
D+55+18 | Resistor analog: Marbles cascading down pin board. | 2023-07-18 |
D+55+6 | Resistance thermometer: Iron coil in liquid Nitrogen and flame varies current. | 2023-07-17 |
D+5+32 | Plexiglas model of electromagnetic wave. | 2023-08-07 |
D+0+4 | Parallel plate capacitor with dielectric materials and electroscope. | 2023-07-12 |
C+80+10 | P.V.T. surface model for water. | 2023-06-21 |
C+22+15 | Operating Sterling cycle engine, hot water powered. | 2023-06-27 |
D+5+34 | LEDs oscillate in stored energy LC circuit. | 2023-08-07 |
D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2023-08-08 |
D+55+4 | High current melts the fuse wire. | 2023-07-18 |
C+70+55 | Fire syringe: paper is ignited in a cylinder with a piston. | 2023-06-22 |
C+22+0 | Engine models: Steam, 4-cycle Otto. | 2023-06-28 |
D+0+28 | Energy storage in a commercial capacitor. Loud bang! | 2023-07-13 |
D+10+0 | Electric fields: Lines of force shown on an OHP. | 2023-07-05 |
D+0+22 | Effects of changing a D.C. voltage in a series RC circuit. | 2023-07-20 |
C+70+60 | CO2 fire extinguisher: Expanding gas freezes into snow. | 2023-06-26 |
D+10+14 | Charging an electroscope by induction. | 2023-07-03 |
D+10+12 | Charge resides on the outside of a conductor. | 2023-07-06 |
C+55+55 | Breathe helium, voice pitch rises; breathe SF6, voice pitch lowers. | 2023-06-21 |
C+70+35 | Bimetallic strip: Brass/invar strip curves when heated. | 2023-06-20 |
D+5+10 | 85 MHz radio transmitter, with indicating lamp on dipole antenna. | 2023-08-08 |