The ESAW Planck’s Constant Apparatus (10881) is a complete experimental setup designed to determine Planck’s constant using the photoelectric effect. This high-precision instrument is widely used in physics labs, universities, engineering colleges, and research institutions across India and globally. Built with export-quality components, it ensures reliable performance for both teaching and advanced experimental use.

✅ Key Features:

• Photo-Sensitive Device: Vacuum photo tube for accurate detection.

• Light Source: Halogen tungsten lamp, 12V/35W.

• Color Filters: 635nm, 570nm, 540nm, 500nm, 460nm.

• Accelerating Voltage Supply: Regulated, continuously variable (+15V) with multi-turn pot and 3-digit LED display, accuracy ±0.2%.

• Current Detection Unit: High-stability digital nanoammeter with ranges 1000mA, 100μA, 10μA, 1μA and 100% overranging facility; resolution 1μA; 4-digit LED display with ±0.2% accuracy.

• Optical Bench: 400mm scale length with movable light source and fixed focusing lens.

• Power Requirement: 220V ±10%, 50Hz or 110V ±10%, 60Hz.

• Complete Setup: No additional accessories required.

✅ Applications & Use Cases:

• Students & Schools: Demonstrates the fundamentals of quantum physics and photoelectric effect.

• Universities & Colleges: Essential in physics and engineering labs for experimental verification of Planck’s constant.

• Medical & Engineering Institutions: Supports advanced lab experiments in electronics and applied physics.

• Industrial & Research Labs: Reliable tool for precision measurement and scientific demonstrations.

This affordable Planck’s Constant Apparatus for labs is Made in India and available for bulk orders at competitive prices. Trusted by schools, universities, research centers, and international distributors across Africa, Europe, Asia, and the USA.

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Technical Specifications – ESAW Planck’s Constant Apparatus (10881)