摘要:

The Cooley–Tukey fast Fourier transform (FFT) has had an extraordinary impact on the computation of Fourier transforms. A tutorial account is given of how the algorithm works and of its relationship to the more familiar continuous Fourier transform and Fourier series. Some pitfalls associated with sampled data over a finite window are outlined. Several examples are given illustrating how the FFT is useful as a teaching tool to introduce the subtleties of spectral analysis of sampled data by interactive minicomputer experiments. A bibliography to the literature is given.

ISSN:0002-9505    

DOI:10.1119/1.10128

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

摘要:

Computer‐generated holograms have been produced on the plotter of an HP 9100B desk‐top calculator. The use of simple stick objects allows us to calculate analytically the Fourier transform, the amplitude and relative phase of which are represented on the plot. Techniques for efficiency enhancement and saturation reduction are discussed.

ISSN:0002-9505    

DOI:10.1119/1.10311

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

摘要:

The problem of phase shift analysis of one‐dimensional scattering is investigated. It is shown that conditions required by Eberly are not sufficient for guaranteeing parameterization of scattering amplitude by phase shifts. The weak point of Eberly’s reasoning is indicated, and the missing condition is specified.

ISSN:0002-9505    

DOI:10.1119/1.10312

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.10313

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.10314

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.10315

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.10316

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.10317

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.10318

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.10319

出版商:American Association of Physics Teachers    

年代:1976

数据来源: AIP