Title=temposcillstion

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Temperature oscillations in a metal: Probing aspects of Fourier analysis (2.3)



Student's Manual This experiment illustrates the basic concepts of Fourier Analysis using simple experimental setup. We will also measure the propagation speed of thermal oscillations, analyze the heat equation and calculate the diffusivity of the material under consideration.
LabView Code LabVIEW Data Acquisition File
Sample Results Discrete fourier transform of data collected over 4500 seconds at 0.005 Hz. Note the presence of odd harmonics only.
Complete temperature profile at 0.005 Hz. Dynamic equillibrium is reached after 2400 seconds.

Discrete fourier transform of data collected over 5000 seconds at 0.02 Hz. Note that the harmonics vanish more quickly.

Further Readings and References "What is a wave?", John A. Scales and Roel Snieder. NATURE. VOL. 401. 21 OCTOBER (1999) 739-740.

“Energy propagation of thermal waves", Agust´ın Salazar, Eur. J. Phys. 27 (2006) 1349–1355.
“Concepts in Thermal Physics (OUP)", S. J. Blundell and K. M. Blundell, 1st Edition, Chapter 10, 88-101
"An undergraduate experiment on the progagation of thermal waves, A. Bodas, V. Gandia and E. Lopez-Baeza, Am. J. Phys. 66, 528-533 (1998).

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