File:Complex Fourier series animation tracing the letter 'e'.webm

Original file(WebM audio/video file, VP9/Opus, length 4 min 32 s, 1,080 × 720 pixels, 551 kbps overall, file size: 17.88 MB)

Summary

Description
English: The animation gives four perspectives of a converging complex Fourier series as more terms are added. 1) The front plane shows a two arm aggregation of series terms where one arm is the sum of the positive rotating terms and the other arm is the sum of the negative rotating terms. 2) The back plane shows a one arm zigzag aggregation of series terms where positive and negative rotating terms are added as pairs producing the zigzag appearance. 3) The intermediate planes (trapezoid baseline) show the frequency and phase information as rotating trapezoids representing individually scaled and rotating terms of the complex geometric series. 4) The audio is what those rotating trapezoids would sound like if they were rotating 3530 times faster.
Date
Source Own work
Author Greg Sepesi

The Julia source code for generating the frames of the animation are in the appendix of the essay Zeno's Enduring Example at https://towardsdatascience.com/zenos-illustrative-example-bb371b99f25a?source=friends_link&sk=8a6f90c96adf5b4a28d223a4a0db7350

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Captions

the front and back planes show the real and imaginary parts of the sum of the first +/-n terms of the complex Fourier series that has coefficients to converge to a tracing of the letter 'e' (for exponential)

Items portrayed in this file

depicts

1 December 2021

video/webm

f7fdb504291fc0bdd01eb3e66708cac461339a50

18,746,743 byte

272.169 second

720 pixel

1,080 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current17:07, 28 December 20214 min 32 s, 1,080 × 720 (17.88 MB)Gj7Uploaded own work with UploadWizard
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