The EMX‑01 is a classic and reliable experimental setup designed to determine the charge-to-mass ratio (e/m) of an electron using the motion of electrons in a magnetic field. It utilizes a Helmholtz coil arrangement and a vacuum electron beam tube to observe circular paths formed by accelerated electrons subjected to a uniform magnetic field.

This version includes analog meters for measuring the accelerating voltage and coil current, offering a hands-on learning experience. The clear phosphorescent screen inside the electron tube makes the circular path of electrons visible, allowing users to calculate the e/m ratio based on the applied magnetic field and measured radius.

The setup is ideal for colleges and universities conducting core physics laboratory sessions in modern physics and electromagnetism.

🔧 Key Features

• Classic Analog Setup for e/m measurement

• Helmholtz Coil provides uniform magnetic field

• Electron Beam Tube with fluorescent path visibility

• Built-in Measurement Scale for beam radius

• Analog Meters for voltage and current readings

• Adjustable Current and Voltage Controls

• Durable Design for repeated laboratory use

Applications

• Measurement of charge-to-mass ratio (e/m) of the electron

• Study of electron dynamics in a magnetic field

• Demonstration of circular motion of charged particles

• Foundational modern physics experiments

• Undergraduate physics lab demonstrations