TEL-2525SYS3
Recreate the first experiment to measure the charge to mass ratio of the electron. Your students can deflect the electron beam with electrostatic forces, magnetic forces, or both. This experiment helped usher in modern physics at the turn of the twentieth century, and provides the ability to calculate the speed of the electron beam by balancing electrostatic and magnetic forces.
TEL-555
The 555 Demonstration tube is the same tube we have offered for more than 30 years. It is offered primarily for departments that have a pre-existing collection of tubes and bases, and would like a replacement tube. Both the 555 and the 2555 are built to the same high standards and will serve as a valuable educational tool for years to come.
TEL-525
The 525 Deflection e/m Tube is the same tube we have offered for more than 30 years. It is offered primarily for departments that have a pre-existing collection of tubes and bases, and would like a replacement tube. Both the 525 and the 2525 are built to the same high standards and will serve as a valuable educational tool for years to come.
TEL-2533.02DAS3
The Hertz Data Acquisition System allows students to measure the excitation energy of Helium atoms. This was some of the first evidence supporting the Bohr model of the atom. Electrons can transfer only quantized amounts of energy to the Helium atoms, resulting in a current that varies periodically as the accelerating voltage increases.
TEL-2533.10DAS3
The Hertz Data Acquisition System allows students to measure the excitation energy of Neon atoms. This was some of the first evidence supporting the Bohr model of the atom. Electrons can transfer only quantized amounts of energy to the Neon atoms, resulting in a current that varies periodically as the accelerating voltage increases.
TEL-2533.102DAS3
The Hertz Data Acquisition System allows students to measure the excitation energy of atoms. This was some of the first evidence supporting the Bohr model of the atom. Electrons can transfer only quantized amounts of energy to the atoms, resulting in a current that varies periodically as the accelerating voltage increases. This system contains both Helium and Neon Tubes.
TEL-84825HGSYS4
This system includes the Franck-Hertz tube with mercury filling and Heater, as well as the Power Supply Unit. This is a recreation of the experiment that provided some of the first evidence in support of the Bohr model of the atom. Electrons can transfer only quantized amounts of energy to the atoms, resulting in a current that varies periodically as the accelerating voltage increases. This experiment with a Mercury tube is most like the original experiment performed by James Franck and Gustav Hertz in 1914.
TEL-84827NESYS2
This system includes the Franck Hertz tube with neon and the Power Supply Unit for Franck-Hertz Experiment. The quantized absorption of energy by atoms was some of the first evidence supporting the Bohr model of the atom. Electrons can transfer only quantized amounts of energy to the Neon atoms, resulting in a current that varies periodically as the accelerating voltage increases.
TEL-8481430NESYS
TEL-8481SYS3/CS (NOT CURRENTLY AVAILABLE)
The fine beam tube is used for investigating the deflection of cathode rays in a uniform magnetic field. Tube is in Helium. Manufactured by MCP Shanghai.
TEL-6789
Mounting plate with six colored light-emitting diodes with different emission wavelengths for determining Planck’s constant h by measuring the cut-off voltage as a function of the frequency of the emitted light. Light-emitting diodes with series resistors mounted on a base plate with a stem.
TEL-310LS3
The Photoelectric Effect demonstrates that the energy of a photoelectron depends on the wavelength of the incoming radiation and not on its intensity. While monochromatic radiation irradiates the photocathode, a potential is applied opposing the energy of the emitted electrons. The voltage required to just stop the current flow is proportional to the energy of the photoelectrons. Plotting this voltage as a function of the reciprocal of the wavelength gives a straight line plot. Students can use the graph's slope to calculate Planck's constant.
TEL-PS-15
Introduce your students to nuclear magnetic resonance spectroscopy and relaxometry. The detailed manual will allow anyone to measure T1 and T2 values for a variety of solids and liquids. Works with both 1H and 19F.
TEL-CWS12-50
Spin is a basic property of nuclei and electrons. Although spin cannot be measured directly, the magnetic dipole moment is closely related and can be observed. This experiment uses the basic setup developed by Felix Bloch, for which he won the 1952 Nobel prize.
Measure NMR/ESR line width
Determine g factor
Study line shape
TEL-NMR/3
TEL-2555SYS3
With the Electron Diffraction Tube one can verify the de Broglie hypothesis and establish the dual nature of the electron. In addition, one can calculate the interatomic spacings of carbon, (the diffracting material in the tube). (Cables are not included in the system.)
Also available is the same system but with the MCP power supply.