Experiment: Fine-Beam Tube (230 V, 50/60 Hz)

Experiment: Fine-Beam Tube (230 V, 50/60 Hz), 8000668 [UE3070700-230], Experiments with Electron Tubes
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Thematic focus: ..
• Demonstrate the deflection of electrons in a uniform magnetic field into a closed circular path
• Determine the Helmholtz current IH as a function of the accelerating voltage of the electron gun U for a constant path radius r.

Experiment description: ..
Electrons in a fine-beam tube are deflected into a circular path by a uniform magnetic field. The tube contains neon gas at a precisely defined pressure so that gas atoms become ionised by collision with electrons along the path thus causing them to emit light. This means the path of the electrons can be viewed directly and the radius of the curvature can simply be measured with a ruler. Since the accelerating voltage of the electron gun U and the magnetic field strength B are both known, the radius of the path r can be used to determine the specific charge of an electron e/m.

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Fine Beam Tube on Connection Base R, 1024633, Electron Tubes D

Fine Beam Tube on Connection Base R

1024633
Unit price
$ 2,169.00
Helmholtz Coils, 300 mm, 1000906 [U8481500], Induction

Helmholtz Coils, 300 mm

1000906 [U8481500]
Unit price
$ 1,074.00
DC Power Supply 0-500 V (230 V, 50/60 Hz), 1003308 [U33000-230], Power Supplies

DC Power Supply 0-500 V (230 V, 50/60 Hz)

1003308 [U33000-230]
Unit price
$ 1,014.00
Analogue Multimeter ESCOLA 100, 1013527 [U8557380], Hand-held Analog Measuring Instruments

Analogue Multimeter ESCOLA 100

1013527 [U8557380]
Unit price
$ 356.00
Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits

Set of 15 Safety Experiment Leads, 75 cm

1002843 [U138021]
Unit price
$ 169.00
Item No.: 8000668 [UE3070700-230]
Brand 3B Scientific
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