D+35+14 | YBaCuO pellet with magnet in liquid nitrogen on TV camera. | 2015-04-09 |
D+35+0 | Wobbly bar: Magnets in frame balanced by repulsive forces. | 2015-04-07 |
D+55+2 | Watt's law: Variable resistor, glow coil, volt and amp meter. | 2015-03-17 |
D+5+30 | Wall chart of electromagnetic spectrum. | 2015-05-01 |
D+5+30 | Wall chart of electromagnetic spectrum. | 2015-04-30 |
D+10+26 | Various Leyden jars to show. | 2015-02-19 |
D+10+26 | Various Leyden jars to show. | 2015-02-24 |
D+10+26 | Various Leyden jars to show. | 2015-02-26 |
D+0+2 | Various capacitors to show. | 2015-03-03 |
D+10+20 | Van de Graaff generator. | 2015-02-12 |
D+30+24 | Vacuum tube with screen shows cathode rays bent with a magnet. | 2015-04-07 |
C+80+0 | Triple Point: Cooled water in sealed cell exhibits all three phases. | 2015-01-27 |
D+10+2 | Transparency: Mapping of an electric field. | 2015-02-12 |
C+75+5 | Transparency: Comparison of F deg , C deg , and K temperature scales. | 2015-01-20 |
D+30+22 | Torque on coil suspended between two magnets. | 2015-03-31 |
D+30+0 | Suspended magnetic lodestone on string. | 2015-03-31 |
C+55+25 | Stoekle's apparatus: Heated tube with mercury and glass bits. | 2015-01-20 |
C+55+25 | Stoekle's apparatus: Heated tube with mercury and glass bits. | 2015-01-22 |
D+0+8 | Series capacitor array. | 2015-03-10 |
D+10+16 | Separation of charge using electrical tape and an electroscope. | 2015-02-10 |
D+0+34 | Same as D+0+30 using oscilloscope to display waveform. | 2015-03-20 |
D+75+1 | Same as above: Secondary used for spot-welding. | 2015-04-21 |
D+75+1 | Same as above: Secondary used for spot-welding. | 2015-04-23 |
D+75+3 | Same as above: Secondary used for small Jacob's ladder. | 2015-04-21 |
D+75+2 | Same as above: Secondary used for induction melting. | 2015-04-21 |
C+55+30 | Ruchardt's tube: Ball oscillates in a vertical glass tube on jug. | 2015-02-05 |
C+70+15 | Ring and ball: Ball fits through ring only after ring is heated. | 2015-01-20 |
D+55+6 | Resistance thermometer: Iron coil in liquid Nitrogen and flame varies current. | 2015-03-12 |
D+55+6 | Resistance thermometer: Iron coil in liquid Nitrogen and flame varies current. | 2015-03-17 |
D+55+0 | Resistance boards: Series, parallel, Wheatstone bridge. | 2015-03-17 |
D+55+0 | Resistance boards: Series, parallel, Wheatstone bridge. | 2015-03-20 |
D+5+32 | Plexiglas model of electromagnetic wave. | 2015-04-30 |
D+25+0 | Phases of V and I in series circuit as RL shifts to RC. | 2015-04-23 |
D+25+0 | Phases of V and I in series circuit as RL shifts to RC. | 2015-04-28 |
D+0+4 | Parallel plate capacitor with dielectric materials and electroscope. | 2015-03-10 |
D+0+4 | Parallel plate capacitor with dielectric materials and electroscope. | 2015-03-17 |
D+35+9 | Para and diamagnetic materials in magnetic field with OHP. | 2015-04-09 |
D+35+10 | Para and diamagnetic materials in magnetic field with arc lamp. | 2015-04-07 |
C+55+40 | Osmosis of helium through semi-porous cup. | 2015-02-05 |
C+55+40 | Osmosis of helium through semi-porous cup. | 2015-02-03 |
D+15+1 | Oscillating magnets in coupled coils | 2015-04-09 |
D+15+1 | Oscillating magnets in coupled coils | 2015-04-14 |
C+22+15 | Operating Sterling cycle engine, hot water powered. | 2015-02-10 |
C+22+15 | Operating Sterling cycle engine, hot water powered. | 2015-02-12 |
C+10+5 | Mechanical model of a gas: Vibrating balls strike piston on OHP. | 2015-01-29 |
C+35+0 | Mechanical equivalent of heat: Aluminum cylinder, crank, rope with 5 kg weight and large LED display. | 2015-02-05 |
C+75+0 | Measurement of temperature: Various types of thermometers. | 2015-01-20 |
D+20+2 | LR time constant: Square wave drives series LR on oscilloscope. | 2015-04-23 |
D+20+2 | LR time constant: Square wave drives series LR on oscilloscope. | 2015-04-28 |
D+15+24 | Levitator: Aluminum dish floats four inches off platform. | 2015-04-14 |
D+5+34 | LEDs oscillate in stored energy LC circuit. | 2015-04-30 |
D+55+10 | Large tungsten filament lamp; as it heats, current drops. | 2015-03-12 |
D+55+10 | Large tungsten filament lamp; as it heats, current drops. | 2015-03-17 |
D+75+4 | Large Tesla coil. 15 inch discharge. | 2015-04-23 |
D+75+4 | Large Tesla coil. 15 inch discharge. | 2015-04-28 |
D+30+1 | Large compass needle on stand. | 2015-03-31 |
D+10+30 | Kelvin water drop electrostatic charge generator. | 2015-02-26 |
D+15+20 | Jumping rings: High current AC coil causes rings to jump. | 2015-04-21 |
D+30+12 | Iron filings around a current carrying coil on OHP to show field. | 2015-04-07 |
D+30+6 | Iron filings and permanent magnets to show field on an OHP. | 2015-03-31 |
C+70+20 | Ice bomb: Iron sphere ruptured by freezing water. | 2015-01-20 |
C+60+0 | Hydraulic pump liquifies CO2 gas in glass column. | 2015-02-03 |
C+20+15 | Hot air balloon: Dry cleaner bag over Bunsen burner rises to ceiling. | 2015-01-29 |
D+55+4 | High current melts the fuse wire. | 2015-03-12 |
D+55+4 | High current melts the fuse wire. | 2015-03-17 |
C+70+22 | Heating a rubber band: negative coefficient of thermal expansion | 2015-01-27 |
C+70+10 | Heated steel rod expands, raises pointer,breaks pin on cooling. | 2015-01-22 |
C+70+6 | Heated horizontal nichrome wire stretches, weight sags. | 2015-01-27 |
C+20+0 | Heat water in "O" shaped tube adding a dye. | 2015-02-10 |
D+15+11 | Hand-cranked DC generator powers 120 volt lamp. | 2015-04-28 |
D+15+11 | Hand-cranked DC generator powers 120 volt lamp. | 2015-04-30 |
D+30+28 | Hall effect: Magnetic field induces a voltage in a neon plasma. | 2015-04-07 |
C+75+15 | Galileo's air thermometer forces liquid down when heated. | 2015-01-20 |
C+80+2 | Freezing liquid Nitrogen. | 2015-02-03 |
D+30+30 | Force on current carrying wire in a magnetic field | 2015-03-31 |
D+30+18 | Force on a current carrying wire in a magnetic field. | 2015-03-31 |
D+15+40 | Flux through loop. EMF depends on position of the meter | 2015-04-28 |
D+15+40 | Flux through loop. EMF depends on position of the meter | 2015-04-30 |
C+65+25 | FLIR T200 Infrared camera | 2015-02-05 |
C+65+25 | FLIR T200 Infrared camera | 2015-02-12 |
C+70+55 | Fire syringe: paper is ignited in a cylinder with a piston. | 2015-02-05 |
C+70+55 | Fire syringe: paper is ignited in a cylinder with a piston. | 2015-01-20 |
C+70+55 | Fire syringe: paper is ignited in a cylinder with a piston. | 2015-01-22 |
C+70+55 | Fire syringe: paper is ignited in a cylinder with a piston. | 2015-02-03 |
D+10+10 | Faraday's ice pail: Charge induced on the outside of a pail. | 2015-02-19 |
D+10+13 | Faraday cage: blocks signal from portable radio | 2015-02-19 |
D+15+35 | Equivalence of large and small loops around enclosed flux | 2015-04-14 |
C+55+60 | Equipartition of Energy: Different mass balls bounce out at different times. | 2015-01-29 |
C+22+0 | Engine models: Steam, 4-cycle Otto. | 2015-02-05 |
C+22+0 | Engine models: Steam, 4-cycle Otto. | 2015-02-10 |
C+22+0 | Engine models: Steam, 4-cycle Otto. | 2015-02-12 |
D+20+0 | Energy stored in large coil with soft iron core flashes bulb. | 2015-04-16 |
D+0+28 | Energy storage in a commercial capacitor. Loud bang! | 2015-03-10 |
D+30+25 | Elementary motor: De La Rive Tube. | 2015-03-31 |
D+30+20 | Elementary motor: Bar on rails over solenoid with core. | 2015-03-31 |
D+15+2 | Elementary generator: Bar moved in magnetic field. | 2015-04-09 |
D+15+2 | Elementary generator: Bar moved in magnetic field. | 2015-04-14 |
D+10+24 | Electrostatic pinwheel:Van de Graaff makes pinwheel spin. | 2015-02-19 |
D+10+24 | Electrostatic pinwheel:Van de Graaff makes pinwheel spin. | 2015-02-24 |
D+10+24 | Electrostatic pinwheel:Van de Graaff makes pinwheel spin. | 2015-02-17 |
D+10+28 | Electrostatic doorbell: Ball bangs between charged plates. | 2015-02-26 |
D+10+28 | Electrostatic doorbell: Ball bangs between charged plates. | 2015-02-17 |
D+10+18 | Electrophorous: Cat fur on teflon, acetate on lucite. | 2015-02-12 |
D+10+0 | Electric fields: Lines of force shown on an OHP. | 2015-02-19 |
D+10+0 | Electric fields: Lines of force shown on an OHP. | 2015-02-12 |
D+10+0 | Electric fields: Lines of force shown on an OHP. | 2015-02-17 |
D+10+35 | Electric field created by Van de Graff splits ions in flame | 2015-02-17 |
D+0+22 | Effects of changing a D.C. voltage in a series RC circuit. | 2015-03-20 |
D+15+28 | Eddy currents: Neodymium Magnet Drop. | 2015-04-14 |
D+15+14 | Eddy currents: Copper disk rotates over a spinning bar magnet. | 2015-04-21 |
D+15+14 | Eddy currents: Copper disk rotates over a spinning bar magnet. | 2015-04-16 |
D+15+4 | Earth inductor: Coil spun in Earth's field makes voltage. | 2015-04-09 |
D+30+26 | E/M tube: Circular bending of an electron beam in a magnetic field. | 2015-03-31 |
C+50+30 | Drum in glycerine rotates to smear line of dye into a plane and back. | 2015-02-10 |
D+0+16 | Discharging a capacitor through a lamp. | 2015-03-03 |
D+30+2 | Dip needle compass. | 2015-03-31 |
C+55+35 | Diffusion of Ammonia and HCl. | 2015-02-10 |
D+75+0 | Demountable transformer with many secondary coils from 10:1 to 1:46. | 2015-04-21 |
D+15+30 | Demonstration of dependence of number of coils on induced flux | 2015-04-09 |
D+15+16 | Damped pendulum: Swinging metal disks damped in magnetic field. | 2015-04-14 |
D+15+16 | Damped pendulum: Swinging metal disks damped in magnetic field. | 2015-04-16 |
B+20+10 | Damped oscillations in a resonant LCR circuit on an oscilloscope. | 2015-04-23 |
B+20+10 | Damped oscillations in a resonant LCR circuit on an oscilloscope. | 2015-04-28 |
B+20+10 | Damped oscillations in a resonant LCR circuit on an oscilloscope. | 2015-04-30 |
C+70+25 | Cubic coefficient of expansion: Dissectable wooden cube. | 2015-01-27 |
C+15+2 | Copper gauze over flame; gas burns only above gauze. | 2015-01-29 |
C+70+65 | Cooling by expansion: Jar with water compressed with air. | 2015-02-05 |
C+70+65 | Cooling by expansion: Jar with water compressed with air. | 2015-02-03 |
D+30+8 | Compass needle shows field around a high current wire on bench top. | 2015-03-31 |
D+10+14 | Charging an electroscope by induction. | 2015-02-10 |
D+10+14 | Charging an electroscope by induction. | 2015-02-12 |
D+10+12 | Charge resides on the outside of a conductor. | 2015-02-19 |
D+10+12 | Charge resides on the outside of a conductor. | 2015-02-17 |
C+10+0 | Carnot cycle models: Piston/cylinder, PVT surface. | 2015-02-19 |
C+20+10 | Cardboard strip drawn from glass tube extinguishes candle. | 2015-02-05 |
C+20+10 | Cardboard strip drawn from glass tube extinguishes candle. | 2015-02-10 |
D+0+24 | Capacitor in parallel in an audio circuit: Low pass filter. | 2015-03-20 |
C+55+15 | Brownian motion: Smoke particles viewed using TV camera. | 2015-01-22 |
C+15+1 | Boiling water in paper cup; cup does not burn. | 2015-02-05 |
C+15+1 | Boiling water in paper cup; cup does not burn. | 2015-01-29 |
C+70+40 | Bimetallic switch: Change in temperature lights cold/hot lamps. | 2015-01-27 |
C+70+35 | Bimetallic strip: Brass/invar strip curves when heated. | 2015-01-20 |
D+15+0 | Bar magnet induces current in a coil, shown on galvanometer. | 2015-04-14 |
C+40+0 | Ball race: Five different balls heated and placed on paraffin sheet. | 2015-01-29 |
D+0+0 | Attraction between horizontal plates of a charged capacitor. | 2015-02-24 |
D+10+6 | Attraction and repulsion of charged styrofoam balls. | 2015-02-10 |
D+10+6 | Attraction and repulsion of charged styrofoam balls. | 2015-02-12 |
D+30+16 | Ampere's law: Currents in parallel wires attract or repel. | 2015-04-07 |
D+20+4 | AC dimmer: Soft iron core in coil dims lamps. | 2015-04-23 |