• Record the characteristic for a thermionic diode at different cathode heater voltage
• Identify the space charge and saturation regions
• Confirm the Schottky-Langmuir law
In a thermionic ...
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Objective: Record characteristics for a thermionic triode
In a thermionic triode, free electrons carry a flow of current between the heated cathode and the
anode when a positive voltage is applied between the cathode and anode. This current ...
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Objective: Demonstrate the straight-line propagation of electrons in the absence of any field
Straight-line propagation of electrons in the absence of a field can be demonstrated in a Maltese-cross
tube by showing how the shadow of the electron ...
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Objective: Demonstrate the straight-line propagation of electrons in the absence of any field
Straight-line propagation of electrons in the absence of a field can be demonstrated in a Maltese-cross
tube by showing how the shadow of the electron ...
more
Objective: Investigate the deflection of electrons by electric and magnetic fields
In a Thomson tube the vertical deflection of a horizontal electron beam can be observed on a fluorescent screen. Such a deflection can be generated by a vertical ...
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Objective: Determine the specific charge of an electron
In the fine-beam tube, the path of electrons in a uniform magnetic field can be observed as a clearly delineated ray. This means that the radius of the circular path can be directly ...
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Objective: Study the physical principles of the time-resolved display of electrical signals using an oscilloscope
The student oscilloscope can be used to study the physical principles of the time-resolved display of electrical signals on ...
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Objective: Demonstrate the superposition of magnetic fields in a vacuum
The absence of interference when magnetic fields are superposed in a vacuum is demonstrated using a
Braun tube. This is done by observing the displacements of the focused ...
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The Helmholtz coils are used to create magnetic fields for deflecting electron beams and are attached to the tube holder S (1014525). The tube holder allows the coils to be set up in Helmholtz configuration or at varying distances. The resulting ...
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Objective: Determine the specific charge of an electron
In the fine-beam tube, the path of electrons in a uniform magnetic field can be observed as a clearly delineated ray. This means that the radius of the circular path can be directly ...
more