| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 5B30.00 | Electrostatic Potential | | |
| 5B30.10 | surface charge density - balls | PIRA 500 | |
| 5B30.10 | surface charge density - balls | 5B30.10 | Separate several pairs of balls of different diameters attached to a Wimshurst by the same distance. |
| 5B30.10 | surface charge density | Ea-23 | Sets of balls of different radius but the same separation are simultaneously attached to a Wimshurst. |
| 5B30.20 | charged ovoid | PIRA 1000 | |
| 5B30.20 | charged ovoid | 5B30.20 | Proof planes of the same area take charge off the round or pointed end of a zeppelin shape. |
| 5B30.20 | surface charge density | Ea-18 | Proof planes of the same area take charge from the flat or pointed end of a charged zeppelin shaped conductor. |
| 5B30.20 | charged Zeppelin | E-29 | Use a proof plane and electroscope to compare charge densities at different points on a egg shaped conductor. |
| 5B30.22 | charge distribution on spheres | E-60 | Read this one. Determine the charge distribution as spheres are brought close to a charged sphere. |
| 5B30.24 | surface charge density with cans | 29-2.8 | Transfer charge from the edge of a can on a source to the inside of a second can. |
| 5B30.25 | charge on spheres | E-61 | Spheres of different diameters are brought to the same potential and inserted into a Faraday ice pail to show different charges. |
| 5B30.26 | spark gaps | E-49 | Connect an electrostatic voltmeter to the terminals of an static machine and observe the voltage while varying the spark gap. |
| 5B30.27 | measure the second derivative of pot | 29-3.2 | A two point probe measures potential, and a five point probe measures the second derivative of potential. Diagram. |
| 5B30.28 | potential during discharge | E-59 | An electroscope is connected to the ball of the electric chime to observe the decrease on potential as the ringing diminishes. |
| 5B30.30 | lightning rod | PIRA 200 | Insert a sphere and point of the same height between horizontal metal plates charged by a Wimshurst. |
| 5B30.30 | lightning rod | 5B30.30 | Insert a sphere and point of the same height between horizontal metal plates charged by a Wimshurst. |
| 5B30.30 | lightning rod | Eb-7 | Sparks jumping from a plane to a sphere will stop when a point is inserted. |
| 5B30.30 | lightning rod | Disc 17-11 | Sparks discharge
from a large ball suspended over a model house with a small ball in the chimney
until a point is raised above the small ball. |
| 5B30.35 | point and ball with Van de Graaff | PIRA 500 | |
| 5B30.35 | point and ball with Van de Graaf | 5B30.35 | Hold a ball close to a Van de Graaff generator and then bring a point close. |
| 5B30.35 | Van de Graaff and wand | Disc 17-09 | With paper streamers as a field indicator, bring a ball and point close to the Van de Graaff. |
| 5B30.40 | electric wind | PIRA 500 | |
| 5B30.40 | electric wind | 5B30.40 | A point attached to a Wimshurst blows a candle flame. |
| 5B30.40 | electric wind | Eb-3 | A candle between pointed and plane electrodes attached to a Wimshurst will blow the flame. |
| 5B30.40 | electric wind | E-37 | A candle flame
held near a point connected to the positive side of an electrostatic generator
will repel the flame as if there is a breeze of ions. |
| 5B30.40 | point and candle | Disc 17-13 | Attach a sharp point to one terminal of a Toepler-Holtz generator and point it at a candle flame. |
| 5B30.41 | history of the electric wind | AJP 30(5),366 | Covers discovery and early investigations, the dust controversy, and recent studies and applications. |
| 5B30.42 | corona discharge in air | A-6 | The corona discharge from a point towards a candle flame and a pinwheel spinning. |
| 5B30.43 | cooling with electric wind | Eb-6 | The electric wind from needle points cools a glowing nichrome wire heater. |
| 5B30.44 | corona current | E-36 | A 1/2 Meg resistor in series with a galvanometer measure the current in a corona discharge from an electrostatic machine. |
| 5B30.45 | corona discharge | Eb-2 | A charged aluminum
rod with a needle at one end will charge a nearby sphere with like charge
if the needle is pointed to the sphere and with opposite charge if the needle
is pointed away. |
| 5B30.45 | escape of charge from a point | E-32 | When
charge is induced on an electrode with a point, the induced charge will escape
and the charge on the induced electrode will be the same as on the inducing
electrode. |
| 5B30.45 | charge by pointing | E-35 | Charge a conductor by proximity to a point attached to a static machine. |
| 5B30.46 | discharging from a point | 29-1.10 | Three
balloons filled with illuminating gas are suspended from a point and charged.
The blunt end of a brass rod has little effect but the pointed end discharges
the balloons when pointed at them. |
| 5B30.46 | darning needle discharge | E-33 | The blunt end of a darning needle is placed on the charged conductor of an electroscope and the electroscope is discharged. |
| 5B30.47 | collapse the field | E-34 | The point of a grounded needle is brought near a charged tinsel tassel and the tassel collapses. |
| 5B30.48 | electrical discharge from water drop | Eb-13 | A
drop of water placed on the positive electrode of a Wimshurst will form a
corona but spit droplets when placed on the negative electrode. |
| 5B30.49 | point cathode effect | AJP 32(9),713 | A point 1s biased to 1200 V in a Wilson cloud chamber. |
| 5B30.50 | pinwheel | PIRA 500 | |
| 5B30.50 | pinwheel | 5B30.50 | A pinwheel spins when attached to a Wimshurst generator. |
| 5B30.50 | electrostatic pinwheel | Eb-10 | A conducting pinwheel spins when connected to a Wimshurst. |
| 5B30.50 | pinwheel | E-38 | A pinwheel rotates when connected to either terminal of a static machine. |
| 5B30.50 | pin wheel | Disc 17-12 | Place a pinwheel on a Van de Graaff generator. |
| 5B30.51 | electrostatic solar system | Eb-11 | A double pinwheel rotates when connected to a Wimshurst. |
| 5B30.60 | Cottrell precipitator | PIRA 500 | |
| 5B30.60 | Cottrell precipitator | 5B30.60 | |
| 5B30.60 | electrostatic precipitator | Eb-12 | Clear smoke in a chimney with points are connected to a Wimshurst. |
| 5B30.60 | Cottrell precipitator | 30-4.5 | Clear a smoke filled tube by a discharge from wire points. |
| 5B30.60 | smoke precipitation | A-5 | Demonstrate smoke particles precipitating in a strong electric field in an artificial chimney. |
| 5B30.60 | smoke precipitation | Disc 17-16 | Attach a Wimshurst to terminals at each end of a glass tube filled with smoke. |
| 5B30.90 | energy in the discharge | E-53 | Light some alcohol or a Bunsen burner with the spark from a static machine. |
| 5B30.91 | gas explosion by spark | E-55 | A spark plug hooked to a static machine is used to explode a mixture of hydrogen and oxygen in a closed container. |
| 5B30.95 | human chain | E-48 | All students hold
hands with one student holding one knob of a static machine and the other
holding a metal rod near the other knob. |
| 5B30.96 | discharge through body | E-47 | A student
standing on the floor touches other students standing on insulated stands
holding on to the two knobs of a static machine. |