Each electrode is stamped with the formula for copper and measures 3/4 x 5-1/2". 
Pack of 12.
Flammability: 2
Weight: 63.55(approx)

One each of the following metals: aluminum, brass, copper, steel, and zinc. 
Each strip measures: 3/4 x 5-1/4".

These 6"-long, male-to-male jumper wires can make breadboarding easy, or use them with most circuit kits. 
Provides additional materials for select kits. Pack of 40.

Enable students to observe the magnetic field generated around current flowing in a wire with the Ampere’s Rule Apparatus. 
Using the apparatus, they can learn about the right-hand rule and characterize how magnetic fields vary with distance. 
Students can also study magnetic fields created by a current in planes perpendicular and parallel to a wire. 
Includes a manual, one 45-mm compass, and six 16-mm compasses. 
Size: 17.5 x 7.5 x 10 cm.Grades 9–12. 
Requires a regulated DC power supply and banana/alligator cords (not included).

Demonstrate the power of induction by shooting an aluminum ring up to 12 ft in the air.
A changing magnetic field between the coil and ring induces an electromotive force (EMF), resulting in current in the aluminum conductor. 
This produces opposing magnetic fields propelling the ring, amazing students, while illustrating Faraday's law of induction and Lenz's law.
The ring, placed over a coil of wire wound on an iron core, is propelled into the air by eddy current repulsion when the coil is energized with an alternating current.  
Ready to use immediately after plugging into a wall socket. 115-V AC, 60 Hz.

Specifications:
Lamp: Mercury discharge lamp, slim design, AC, 1,500 Vp-p, 5 W
Observed Emission Line: 3S1 (6s7s)—5P2 (6s7s) at 546.1 nm
Maximum Magnetic Field at Lamp Position: 1.3 T
Fabry-Pérot Etalon: Aperture: 40 mm
Separation of Quartz Plates: 2.0 mm
Central Wavelength: 589.3 nm
Resolution: ≥2 x 105
High-Reflection Bandwidth: 100 nm
Interference Filter: Central Wavelength: 546.1 nm
Transmission Bandwidth: ≤10 nm
Peak Transmission: ≥50%
Collimating Lens: Aperture: 37 mm
Focal Length: 110 mm
Environmental: Operating Limits: 0 to 40° C (32 to 104° F).
Humidity: 35% to 80%.
Power Input: 110-V AC, 60 Hz, 190 W
Dimensions: 2 x 0.75 m (7-1/2 x 2-1/2 ft)
Weight: 36.4 kg (80 lb)
Electromagnet: Built-in current-controlled 
Power supply: 90-V DC, 0.5 to 1.4 A, with analog ammeter.
Magnet rotatable 90° for transverse or longitudinal viewing.

The instruction manual contains sample activities and sample data for the following basic experiments:

• Electron behavior in an electric field.
• Electron deflection in a transverse electric field.
• Electron paths in an inhomogeneous longitudinal electric field.
• Electron deflection in a transverse magnetic field.
• Spiral electron path in a longitudinal magnetic field.
• Determination of e/m.

Specifications:
Overall Length: 240 mm
Neck Diameter: 51.4 mm
Flat Screen Diameter: 75 mm
Grid Pitch: 10 mm
Y-Deflection: ~±100 V
Power Requirement: 110-V AC, 60 Hz
Case: Dimensions: 470 x 330 x 215 mm
Weight: ~10 kg (22 lb)
Transverse Field Coils:
Mean Diameter: 67 mm
Number of Turns: 530 per coil
Axial Field Solenoid:
Mean Diameter: 93 mm
Length: 228 mm
Number of Turns: 1,300
Power Supplies:
CRT: Cathode Voltage: -750 to -1,400 V
Focus Voltage: +200 to +400 V
Grid Voltage: -4 to -80 V
Electrostatic Deflection: X-Deflection: ~±100 V
Magnet Supply: 0 to 9 V, 0.155 A transverse, 0 to 7.7 V, 2.0 A axial

Demonstrate electromagnetic induction and transformer principles with this classic device. 
Plated iron core is 165 mm L with 19 mm diam. 
Primary coil has 175 turns of 18 AWG insulated copper wire. 
Coils are wound on molded formers fitted with shielded banana jacks.
Secondary coil has 3 different available windings—500; 1,000; and 1,500 - with insulated copper wire.