E/M BY MILLIKAN’S OIL DROP METHOD | Determination of e/m of Electron Using Millikan Oil Drop Apparatus

Description

The E/M by Millikan’s Oil Drop Method Apparatus is a precision physics laboratory instrument designed to determine the charge of an electron and subsequently calculate the specific charge (e/m) using the classical Millikan oil drop experiment. This apparatus enables students to observe and analyze the motion of charged oil droplets under the influence of electric and gravitational fields, offering a direct experimental verification of the quantization of electric charge.
Ideal for physics laboratories, universities, engineering colleges, and advanced educational institutions.
✅ Key Features
🧪 Classical Millikan Oil Drop Experiment
Determination of electronic charge using suspended oil droplets
Verification of quantization of electric charge
Calculation of specific charge (e/m) of electron
🔬 High-Precision Observation Chamber
Transparent oil drop chamber for clear visibility
Uniform electric field between parallel plates
Stable and controlled experimental environment
💡 Illumination & Optical System
Built-in illumination system for sharp droplet visibility
High-quality microscope with fine focusing
Accurate measurement of droplet motion and velocity
⚡ Regulated Power Supply System
Smooth DC high-voltage supply for electric field generation
Fine voltage control for balancing gravitational and electric forces
Ensures stable and repeatable experimental results
📊 Accurate Measurement & Control
Sensitive voltmeter for plate voltage measurement
Stopwatch or digital timing system for velocity calculations
Enables precise calculation of charge and e/m
🧱 Educational Trainer Design
Clearly labeled controls, terminals, and switches
Printed experimental layout on front panel
Rugged construction suitable for continuous student use
🛡 Safety & Reliability
Student-safe operation with electrical protection
High-quality components for long-term stability
Designed for repeated academic laboratory experiments
📘 Typical Applications
Determination of electronic charge
Calculation of specific charge (e/m) of electron
Study of motion of charged particles in electric fields
Undergraduate and postgraduate modern physics experiments
💡 Why Choose This Apparatus?
Direct experimental verification of charge quantization
High accuracy and excellent repeatability
Essential experiment in modern physics laboratories
Robust design ideal for educational institutions