F+85+0 | YBaCuO pellet with magnet in liquid nitrogen on TV camera. | 2017-03-09 |
D+30+22 | Torque on coil suspended between two magnets. | 2017-04-05 |
D+50+0 | The Braun tube with magnetic and electrostatic deflection. | 2017-02-28 |
D+30+0 | Suspended magnetic lodestone on string. | 2017-03-23 |
D+55+13 | Same as D+55+12 using speaker for audio tone generation. | 2017-03-21 |
C+70+15 | Ring and ball: Ball fits through ring only after ring is heated. | 2017-01-19 |
D+55+18 | Resistor analog: Marbles cascading down pin board. | 2017-03-16 |
D+55+6 | Resistance thermometer: Iron coil in liquid Nitrogen and flame varies current. | 2017-03-09 |
D+35+10 | Para and diamagnetic materials in magnetic field with arc lamp. | 2017-04-18 |
D+0+30 | Oscillator made with resistor, capacitor and neon lamp. | 2017-03-22 |
C+22+15 | Operating Sterling cycle engine, hot water powered. | 2017-02-07 |
C+55+10 | Mechanical model of a gas: Vibrating balls strike piston on OHP. | 2017-01-17 |
C+55+0 | Mechanical model of a gas: Vibrating balls on OHP. | 2017-01-17 |
D+35+2 | Making a magnet by electromagnetic induction. | 2017-04-18 |
D+30+14 | Magnetic field around a solenoid with pivoting probe magnet. | 2017-04-06 |
D+20+2 | LR time constant: Square wave drives series LR on oscilloscope. | 2017-04-25 |
C+60+5 | LN2 demos: pewter bell and spring, color change tube, LN2 cannon. | 2017-01-31 |
D+15+24 | Levitator: Aluminum dish floats four inches off platform. | 2017-04-20 |
D+5+2 | LCR series resonance curve of V vs. F (2 - 20kHz) on an oscilloscope. | 2017-04-25 |
D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2017-04-20 |
D+30+10 | Iron filings around a high current vertical wire on OHP to show field. | 2017-03-23 |
D+55+4 | High current melts the fuse wire. | 2017-03-09 |
D+15+11 | Hand-cranked DC generator powers 120 volt lamp. | 2017-04-20 |
D+30+28 | Hall effect: Magnetic field induces a voltage in a neon plasma. | 2017-04-06 |
C+70+55 | Fire syringe: paper is ignited in a cylinder with a piston. | 2017-01-31 |
C+70+55 | Fire syringe: paper is ignited in a cylinder with a piston. | 2017-02-02 |
D+10+13 | Faraday cage: blocks signal from portable radio | 2017-04-20 |
D+10+13 | Faraday cage: blocks signal from portable radio | 2017-02-22 |
C+22+0 | Engine models: Steam, 4-cycle Otto. | 2017-02-07 |
D+0+28 | Energy storage in a commercial capacitor. Loud bang! | 2017-02-28 |
D+45+2 | Elementary split-ring armature DC motor. D+15+6 as a motor. | 2017-04-05 |
D+10+0 | Electric fields: Lines of force shown on an OHP. | 2017-02-14 |
D+10+35 | Electric field created by Van de Graff splits ions in flame | 2017-02-22 |
D+10+35 | Electric field created by Van de Graff splits ions in flame | 2017-02-23 |
D+15+26 | Eddy currents:Small magnet slowly drops between aluminum rails. | 2017-04-13 |
D+30+26 | E/M tube: Circular bending of an electron beam in a magnetic field. | 2017-04-14 |
D+30+26 | E/M tube: Circular bending of an electron beam in a magnetic field. | 2017-04-13 |
D+15+16 | Damped pendulum: Swinging metal disks damped in magnetic field. | 2017-04-20 |
D+5+6 | Crystal radio circuit for AM reception. | 2017-04-25 |
D+30+8 | Compass needle shows field around a high current wire on bench top. | 2017-04-06 |
D+10+14 | Charging an electroscope by induction. | 2017-02-14 |
D+10+12 | Charge resides on the outside of a conductor. | 2017-02-22 |
C+55+20 | Brownian motion: Like C+55+0, with an aluminum disk added. | 2017-01-17 |
C+70+35 | Bimetallic strip: Brass/invar strip curves when heated. | 2017-01-18 |
C+70+35 | Bimetallic strip: Brass/invar strip curves when heated. | 2017-01-19 |
D+30+16 | Ampere's law: Currents in parallel wires attract or repel. | 2017-03-23 |
D+5+10 | 85 MHz radio transmitter, with indicating lamp on dipole antenna. | 2017-04-20 |