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  Home > JCE Print > Journal of Chemical Education > Issues > 2000  > September  >
Information • Textbooks • Media • Resources
Computer Bulletin Board
Calibration of Frequency Data Collection Systems Using Shortwave Radio Signals
Ron Estler
Department of Chemistry, Fort Lewis College, Durango, CO 81301-3999
Cover
September 2000
Vol. 77 No. 9
p. 1244
Abstract
The atomic-clock-derived audio tones broadcast on the National Institute of Standards and Technology (NIST) shortwave station WWV are used to calibrate computer frequency data collection systems via Fast Fourier Transforms (FFT). Once calibrated, the data collection system can be used to accurately determine the audio signals used in several instructional physical chemistry laboratory experiments. This method can be applied to virtually any hardware-software configuration that allows adjustment of the apparent time scale (digitizing rate) of the recorded audio file.
More Information
*  Citation
 Estler, Ron C. J. Chem. Educ. 2000 77 1244.
*  Keywords
 Computer Assisted Instruction; Fourier Transform Techniques; Laboratory Computing / Interfacing; Laboratory Instruction; Physical Chemistry
*  History
 Created:
Last Updated:		 August 29, 2000
June 22, 2005
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