"tbe buffer"

Tube holder is made of robust plastic for holding D-series electron tubes. Stand has a wishbone, 360° rotating clamp made of heat-resistant plastic and two base holes for affixing the Teltron Helmholtz Coils. On rubber feet to prevent slipping.

The Student Coin and Feather Tube shows the two items in a vacuum, falling at the same rate.

Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied. The electron beam can be deflected electrically in the electric field of the built-in plate capacitor, and magnetically by using the Helmholtz coil pair (not included). By adjusting the electric field so that it cancels the magnetic deflection, it is possible to determine the specific charge (e/m) and the velocity of the electrons.

High quality and reliable.

Study Wavelengths and Energy All With One Device

Explore beautiful 3-D patterns created by a magnetic field mess free.

Hertz electron tube for quantitative investigations of Inelastic collisions of electrons with inert gas atoms.

Demonstrates static electricity's attractive and repulsive forces using a pendulum electroscope.​

Used to investigate wavelength in air.

100 feet of extra tubing for TeacherGeek projects.

Demonstrate the classic free fall experiment in a vacuum.

Demonstrate the Lorentz force and calculate the charge/mass ratio of an electron.

Bulk balsa, chipboard sheets, and dowels for blade making in the classroom.

Clear Measurements in Classic Study of Electrons

Investigate the deflection of electrons.

Guinea and feather tube apparatus with 6 induction coils connected in series.