| Item |
Description |
U/M |
Price |
Item# |
| Discharge Electrode |
N-122 small, hand-held. A polished anodized aluminum sphere which, when grounded, is used to receive the intense arc discharges from the Van de Graaff generator dome. The flexible ground lead is 90cm long and has a banana plug at one end which connects to the base of the sphere and an alligator clip at the other end which connects to the ground post on the base of the generator.
Sphere:Ø;10cm Handle:40cm long |
each |
88.60 |
3178122 |
|
N-122B small, with mounting base is identical to N-122 but with a 3 inch diameter cast iron base holding a vertical aluminum rod with a hole drilled in the end to accomodate the electrode and hold it up to the height of the generator dome.
Sphere:Ø;10cm Handle:40cm long |
each |
122.40 |
3178822 |
|
N-122L large, mounted. This may be used as an isolated sphere or may be grounded to the base of the generator thus intensifiing the arc discharges by addition of capacitance. A flexible grounding lead with banana plug and alligator clip is included.
Sphere:Ø 25cm Handle:76cm long |
each |
235.45 |
3178922 |
|
N-138 jointed arms with an easily adjusted arm span, this device is primarily used to discharge Leyden jars. The pivot at center is friction-loaded so that the arms can be readily positioned by hand. Both the arms and the rounded contact ends are made of stainless steel. Each arm is approximately 15cm long. The insulated handle is clear acrylic and is 12.5cm long. |
each |
59.80 |
3178938 |
| Electric Plume |
N-125 The electric plume has a number of colored ribbons attached to a vacuum cup. When mounted on the dome of a Van de Graaff generator, the ribbons will slowly acquire a charge, even though they are normally thought of as insulators or non-conductors. As the charge builds, the ribbons will stand away from each other. This is a vivid demonstration showing that like charges repel one another.
Cup:Ø 6cm |
each |
26.70 |
3178925 |
| Electric Whirl |
N-124 standard. N-124 When brought near the dome of a generator, the whirl spins rapidly in a direction that is away from the points. The electrons escaping from the dome to the spokes ionize the air at the sharp points. Since the spokes are contiuously charged, the ionized air particles are repelled and the spinning results from an equal and opposite force reaction. Even if it given an initial spin in the opposite direction, it will stop and reverse.
Whirl:Ø 23cm |
each |
50.40 |
3178124 |
|
N-124-IS Same as N-124 but, for mounting on insulating stand |
each |
50.40 |
3177124 |
| Electrophorus |
N-130 Static charges are created on the plastic base by rubbing with the cloth which is included. The metal disc may then be used to transfer the charge to other devices such as a Leyden jar or an electroscope. The insulating handle is clear acrylic.
Disc:Ø 18cm |
each |
54.00 |
3178930 |
| Flying Ball & Silver Snake |
N-144. A great way to demonstrate a basic principle of electrostatics. The metallized ball, when first brought near the dome, is attracted by induction until it touches. It is immediately charged to the full dome potential and is repelled. The ball then floats at a distance from the dome. The silver snake is also attracted by induction, but as soon as it touches the dome, it too is repelled. Whereas the ball retains its charge, the snake does not and repeatedly strikes back.
Length: 72cm |
each |
48.25 |
3178144 |
| Hollow Cylinder |
N-142 Small lightweight balls are suspended both on the outside and inside of a short length of metal tubing. When the cylinder is charged through the top electrode, the balls touching the outside surface will be repelled but the balls inside will be unaffected.
Heigth: 26.5cm. |
each |
127.45 |
3178142 |
| Hollow Sphere |
N-121 Static charges lie only on an outside surface and this device shows it. Charge the sphere by touching it to the dome of a generator. When a proof plane is touched to the outer surface, a charge will be acquired, but when it is touched to the inside surface, no charge is treansferred. The sphere's re-entrant hole is 4cm.
Sphere:Ø 10cm Height:26cm long |
each |
82.80 |
3178121 |
| Insulating Stand |
N-140 The tapered plug at the top is used to support the Racing Ball (N-141) and the clip under the plug can be used to hang the Lightening Plate (N-139).
Base:Ø 9cm Height:43cm long |
each |
55.45 |
3178140 |
| Lightning Plate |
N-139 When connected to a high voltage electrostatic source, soarks will jump across each of the gaps in the metal foil pattern. This is an impressivedemonstration, especially in a darkened room. Intended to be hung from the clip at the top of the insulating stand (N-140).
NOT TO BE USED WITH ANY VOLTAGE SOURCE OTHER THAT A VAN DE GRAAFF GENERATOR. |
each |
28.80 |
3178139 |
| Neon Wand |
N-146 This is a glass tube filled with neon gas and is similar to a section of ordinary neon sign. When held and pointed at the dome of a generator, the current will ligh the tube a bright orange. Neon is used as it is the easiest gas to excite into emitting light. There is a large voltage drop across the tube so the person holding the tube will not feel anything. A striking display, especially in a darkened room.The end of the tube is fitted with a foam rubber handle.
Length: 33cm. |
each |
61.20 |
3178146 |
| Proof Plane |
N-135 The proof plane is used to transfer electrostaic charge from one body to another. A spherical shape is used because this geometry holds the greatest charge and retains it for the longest time.
Sphere:Ø 3.5cm length: 18cm |
each |
25.20 |
3178135 |
| Racing Ball |
N-141 When connected to a Van de Graaff generator, electrostatic action causes the ball to circle around the dish.
Disc: Ø 14cm |
each |
64.80 |
3178141 |
| Terminal |
Banana N-128 Terminal is able to attach to sphere of a Van de Graaff generator in the same manner as a ring attachment, but with a connection for a banana plug. |
each |
19.45 |
3178128 |
|
Point N-127 This device shows one particular aspect of static charge behavior. With the suction cup adhered to the generator dome, the sharp point provides an easy discharge path into the air. Several things will be apparent. The dome's voltage level will be lower, producing onlt very small discharges and there will be a noticable wind blowing away from the point caused by the ionization of air and subsequent repulsion of charged ions.
Ø 6cm |
each |
15.85 |
3178127 |
|
Ring N-126 For attaching electrostatic accessories to a Van de Graaff generator. Consists of a metal ring attached toa rubber suction cup which will hold itself to the Van de Graaff generator dome. A connecting chain can be attached to the ring. |
each |
17.30 |
3178126 |
| Van de Graaff Generator |
N-100V A rugged unit that will develope potentials of up to 350,000 volts on a polished, anodized dome. Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale. The maximum continuous current is only about 10 microamperes, so the unit is quite safe. Sparks of 8" are usual and may go to 12-15". The standard machine has a negative dome, but a positive electrode machine is available. The unit is assembled with an extra transport belt.
Dome: Ø 25cm Height: 76cm
Lower cabinet: 30cm x 25cm x 7.5cm |
each |
640.80 |
3178900 |
|
N-100VB Same as N-100v but for 220v |
each |
669.60 |
3178700 |
|
N-100VP 110v positive dome |
each |
655.20 |
3178800 |
| Replacement belt |
N-100B for N-100 series Van de Graaff generator and also fits the American Electrostatics Van de Graaff generators. |
each |
17.10 |
3178100 |
| Van de Graaff Generator |
N-105S This is a small electrostatic generator capable of developing charges as high as 50,000 to 75,000 volts. It is an impressive and convenient source for charging electroscopes and proof planes as well as demonstrating the nature of high voltage static charges. Overall height is 13-1/2 " and the electrode diameter is about 4". 110 volts. |
each |
231.85 |
3178105 |
|
N-105SB 220v |
each |
259.20 |
3178905 |
| Replacement belt |
N-105B for N-105S series |
each |
10.40 |
3178106 |
| Replacement belt |
for Cambosco Van de Graaff generators are available on special order. (2-3 weeks lead time.) |
each |
27.60 |
3178103 |
| Replacement belt |
for Morris & Lee (now called Science First) 200Kv Van de Graaff generators. |
each |
13.20 |
3172916 |
| Replacement belt |
for Morris & Lee (now called Science First) 400Kv Van de Graaff generators. |
each |
42.20 |
3172988 |
| Video* |
N-157 for Van de Graaff generators |
each |
50.00 |
3178157 |
| Volta's Hail Storm |
N-132 When small bits of aluminum foil, pith or vermiculite are placed in the cylinder and the upper plate is brought near an operating generator, the particles will bounce rapidly. They are first attracted to the upper plate but, after touching, are violently repelled downward. The precipitation of smoke may also be demonstrated. Vermiculite and metal screening included. 29cm tall chamber |
each |
69.85 |
3178132 |
|
N-132L Same as N-132 but chamber is larger. 37cm tall chamber |
each |
104.40 |
3178932 |
