Apparatus for Determining Planck's Constant Basic Model for Advanced Physics Lab

The Apparatus for Determining Planck's Constant Basic Model for Advanced Physics Lab is designed to demonstrate the photoelectric effect and determine Planck’s constant using Einstein’s photoelectric equation. This apparatus provides students with practical experience in one of the most important experiments in modern physics and quantum mechanics. Through the experiment, students can observe the emission of electrons from a metal surface when exposed to light of different wavelengths. By analyzing the relationship between light frequency and stopping potential, students can calculate Planck’s constant and gain a deeper understanding of the quantum nature of light. Its compact design, reliable performance, and straightforward operation make it an ideal instrument for physics laboratories in colleges, universities, and educational institutions. Physics Lab Experiments from Atico Exports.

Demonstrate the Photoelectric Effect:

• Observe the emission of photoelectrons when light falls on a photosensitive surface
• Study the interaction between light and matter

Determine Planck’s Constant:

• Use experimental measurements and Einstein’s photoelectric equation
• Calculate Planck’s constant from measured data

Study the Relationship Between Light Frequency and Electron Energy:

• Investigate how different wavelengths of light affect emitted electron energy
• Analyze the relationship between frequency and stopping potential

Verify Fundamental Concepts of Quantum Mechanics:

• Understand the particle nature of light
• Explore the principles underlying quantum theory

Cut-Off Wavelengths of Color Filters:

• 635 nm
• 570 nm
• 540 nm
• 500 nm
• 460 nm

Light Source:

• 12 V / 35 W Halogen Tungsten Lamp

Sensor:

• Vacuum Phototube

Dark Current:

• Less Than 0.003 µA

Accelerating Voltage Accuracy:

• Better Than ±2%

Measurement Error:

• Less Than 10% Compared with Standard Reference Values

Parts List:

Main Unit:

• Quantity: 1

Color Filters:

• Quantity: 5

Power Cord:

• Quantity: 1

Instruction Manual:

• Quantity: 1

• Complete Experimental Setup
• Compact and Stable Construction
• Low Dark Current for Improved Accuracy
• Cost-Effective Teaching Equipment
• Suitable for Demonstrating Fundamental Quantum Physics Concepts