Variable length pendulum analyzed by a comparative Fourier and wavelet approach



Título del documento: Variable length pendulum analyzed by a comparative Fourier and wavelet approach
Revista: Revista mexicana de física E
Base de datos: PERIÓDICA
Número de sistema: 000427327
ISSN: 1870-3542
Autors: 1
1
Institucions: 1Universita degli Studi di Messina, Dipartimento di Scienze Matematiche e Informatiche, Scienze fisiche e Scienze della Terra, Messina, Sicilia. Italia
2Le Studium, Loire Valley Institute for Advanced Studies, Orleans, Loire-Atlantique. Francia
Any:
Període: Ene-Jun
Volum: 64
Número: 1
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, teórico
Resumen en inglés The motion of a pendulum with a variable length is analyzed by means of a comparative Fourier and Wavelet approach. In particular Fourier and continuous Wavelet transforms have been jointly employed to investigate the non stationary signal of a variable length pendulum in an easy-to-interpret scenario addressed to undergraduate and graduate students. The comparison between the two data analysis protocols allows to easily show that while the Fourier transform is able to extract only an average frequency value for the variable length pendulum motion, Wavelet analysis furnishes information on the time behaviour of the motion spectral content, i.e. provides a joint time-frequency analysis
Disciplines Física y astronomía
Paraules clau: Física,
Péndulo de longitud variable,
Transformada de Fourier,
Transformada Wavelet
Keyword: Physics,
Variable length pendulum,
Fourier transform,
Wavelet transform
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