Fine Beam e/m System, Ne
Fine Beam e/m System, Ne
TEL-8481430NESYS
- Deflection of electrons in a closed circular path inside a magnetic field.
- Determination of specific charge of an electron e/m.
TEL-8481430NESYS
Deflection of electrons in a closed circular path inside a magnetic field.
Determination of specific charge of an electron e/m.
For examining the deflection of electron beams in a uniform magnetic field using a pair of Helmholtz coils and for the quantitative determination of the specific charge of the electron e/m. Glass vessel with integrated electron beam system, consisting of an indirectly heated oxide cathode, a Wehnelt cylinder and a perforated anode, in neon residual gas atmosphere with precisely set gas pressure and with integrated measurement marks for parallax-free determination of the diameter of the fine beam. Gas atoms are ionized along the electron path and produce a sharply defined, visible fluorescent beam. Tube mounted on base with color coded connectors.
The magnetic field is provided by a set of Helmholtz coils, and the entire system is powered by a single power supply.
(Cables and meter pictured are not included in the system.)
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.