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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 16 (2011) pp 62-64

Determining Planck’s Constant Using the Vernier LabQuest Interface and Power Amplifier

Tiffany Thanel and Matt Morgan*

Department of Chemistry, Hamline University, 1536 Hewitt Ave, St. Paul, MN 55104,
Received September 22, 2010. Accepted January 16, 2011.

Published: 18 February 2011

Abstract. This article discusses two methods that will determine Planck’s constant using a Vernier LabQuest Interface, Power amplifier, and light emitting diodes (LEDs). While some mathematical manipulation is necessary, the calculations are workable, and the values produced are close to the accepted value. These procedures are easily convertible to student experiments.

Key Words: Laboratories and Demonstrations; general chemistry

(*) Corresponding author. (E-mail:

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