## Encyclopedia of Physical Science and Technology, Volume 2Academic Press, 1992 - Physical sciences |

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Page 27

Wavelets The

behavior of /(/) in the frequency domain. This representation, however, does not

reflect time-evolution of frequencies. A classical method, known as short-time

Fourier ...

Wavelets The

**Fourier transform**/(oj) of a function /(/) represents the spectralbehavior of /(/) in the frequency domain. This representation, however, does not

reflect time-evolution of frequencies. A classical method, known as short-time

Fourier ...

Page 213

In recent years there has been a shift toward the use of spectral transform

methods in global atmospheric models. ... Such an approach is feasible because

of the speed of the fast

...

In recent years there has been a shift toward the use of spectral transform

methods in global atmospheric models. ... Such an approach is feasible because

of the speed of the fast

**Fourier transform**(FFT) algorithms used in the longitudinal...

Page 328

... 0 it is straightforward to show that where is the

= -4= I' «.(f) exp(-/o>f) dt Note that has units of momentum, indicating the net

impulse to the oscillator. Describing %j as the field associated with a screened ...

... 0 it is straightforward to show that where is the

**Fourier transform**of %j(t), that is,= -4= I' «.(f) exp(-/o>f) dt Note that has units of momentum, indicating the net

impulse to the oscillator. Describing %j as the field associated with a screened ...

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### Contents

Guide to Using the Encyclopedia ix Atomic Physics | 339 |

Approximations and Expansions 1 Atomic Spectrometry | 357 |

Archaeological Geology 31 Atomic Spectroscopy | 381 |

Copyright | |

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