Description
Specifications Table
Product Material – Borosilicate glass and metal components
Grade – Laboratory/Educational
Application – Electron charge-to-mass ratio determination
Product Overview
The E/M by Magnetic Focusing Method apparatus is a precision instrument designed for determining the electron charge-to-mass ratio (e/m) through magnetic focusing. Engineered for physics laboratories, this apparatus provides a clear visual demonstration of electron behavior under magnetic fields, making it ideal for advanced experiments. The setup includes a high-vacuum tube with a filament, accelerating electrodes, and a magnetic field assembly, ensuring accurate electron trajectory observation. The durable borosilicate glass construction offers clarity and resistance to thermal stress, while the metal components provide stability and longevity. The apparatus operates by accelerating electrons through a potential difference and subjecting them to a uniform magnetic field, causing them to follow a circular path. This path is measured to calculate the e/m ratio, a fundamental constant in physics. The design minimizes external interference, ensuring precise results. Suitable for educational and research applications, this apparatus enhances understanding of electromagnetic principles with hands-on experimentation.
FAQs
1. How does the E/M ratio apparatus ensure accurate electron trajectory measurement?
The apparatus uses a uniform magnetic field and calibrated accelerating voltage to create a controlled environment for electron movement. The circular path formed by electrons is observed through the glass tube, allowing precise radius measurement for e/m calculation.
2. Can this apparatus be used with external power supplies?
Yes, the E/M ratio apparatus is compatible with standard lab power supplies that provide the required voltage for filament heating and electron acceleration. Ensure the power supply matches the specified voltage and current ratings.
3. What safety precautions should be followed while operating this apparatus?
Always handle the glass components with care to avoid breakage. Ensure proper grounding of the setup and avoid touching live electrical parts during operation. Use in a well-ventilated area and follow standard lab safety protocols.
4. Is calibration required before using the E/M ratio apparatus?
While the apparatus is pre-configured for standard experiments, recalibration may be necessary if used in varying magnetic field strengths or voltage conditions. Follow the manufacturer’s guidelines for calibration procedures.
5. What alternatives exist for measuring the e/m ratio in labs?
Alternatives include Thomson’s method using deflection in electric and magnetic fields or modern digital setups with automated data acquisition. However, the magnetic focusing method remains a classic and reliable approach for educational demonstrations.
