Year: 2025
Type: article
Abstract: This study introduces a methodology for estimating Planck's constant by employing light-emitting diodes (LEDs) through the mechanism of capacitor discharge. The innovation lies in the utilization of a cost-effective single-board microprocessor, the Raspberry Pi, which is seamlessly integrated with Python software to facilitate real-time data acquisition and visualization. Notably, the methodology diverges from traditional approaches by determining the threshold voltages of LEDs, thereby eliminating the need for direct current measurements and instead focusing on the voltage variations across the capacitor during the discharge phases. The precision of this technique is underscored by the measured value of Planck's constant, which is determined to be 6.05 ?10-34 J.s, aligning closely with accepted values within a margin of experimental error of 8.68%.
Source: European Modern Studies Journal
Authors: Chittaranjan Ghosh, Koustav Dey
Institution: Missouri University of Science and Technology
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4409863990