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posted by martyb on Monday February 08 2016, @08:36AM   Printer-friendly
from the does-it-go-'round-in-circles? dept.

No big story, just a neat animation of a Fourier series.

[Ed. additions follow.]

JavaScript is required, but it seems to run okay after in Pale Moon and NoScript after enabling bgrawi.com and ajax.googleapis.com; also, the page benefits from a large display: be sure to scroll down and see the component equations and their output, too.

Sometimes, a picture IS worth a thousand words. Was taught Fourier series back in my college days, but that was before MATLAB and Maple were generally available. Posting this in hopes others may find this interesting and illuminating, too.


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  • (Score: 2) by jimshatt on Monday February 08 2016, @08:53AM

    by jimshatt (978) on Monday February 08 2016, @08:53AM (#300497) Journal
    Pretty cool stuff. Was slightly annoyed at the browser message (works best in Google Chrome and MS IE Edge), though. It works perfectly in FF as well, so specifically excluding it makes it seem like there is an agenda, or is FF this irrelevant nowadays?
    • (Score: 0) by Anonymous Coward on Monday February 08 2016, @09:14AM

      by Anonymous Coward on Monday February 08 2016, @09:14AM (#300502)

      In December, Firefox was used ten times more than the Edge browser, but less than one-third as much as Chrome.

      http://www.sitepoint.com/browser-trends-january-2016-12-month-review/ [sitepoint.com]

      • (Score: 3, Insightful) by aristarchus on Monday February 08 2016, @09:19AM

        by aristarchus (2645) on Monday February 08 2016, @09:19AM (#300504) Journal

        It seems the main raison d'etre of Soylent, in the last day or so, has been intell on what javascript to allow in order to view sites. Is it just me, or am I paranoid, and am just thinking it is just me?

  • (Score: 0) by Anonymous Coward on Monday February 08 2016, @11:20AM

    by Anonymous Coward on Monday February 08 2016, @11:20AM (#300524)

    The inavoidable Wilbraham-Gibbs peaks [wikipedia.org] were bugging me since college and now thanks to this discover and learn about the Lanczos sigma factor [wikipedia.org]. Cool.

  • (Score: 2) by Rich on Monday February 08 2016, @12:34PM

    by Rich (945) on Monday February 08 2016, @12:34PM (#300550) Journal

    ...the article came in just in a break from (leisurely) studying the Jupiter 8 VCO sawtooth core schematic. (Anyone knows by chance how Op 1A[123] and TR1A are supposed to regulate the current out of the joined 3046 emitters?).

  • (Score: 0) by Anonymous Coward on Monday February 08 2016, @02:11PM

    by Anonymous Coward on Monday February 08 2016, @02:11PM (#300590)

    It's a cool animation but it seems to keep crashing my Pale Moon installation after some seconds. Might be something to do with RequestPolicy blockages but it shouldn't happen. : ( Anyone else had an outright crash?

    • (Score: 2) by SanityCheck on Monday February 08 2016, @03:43PM

      by SanityCheck (5190) on Monday February 08 2016, @03:43PM (#300655)

      I use Pale Moon as my default browser only so it opens all links I click by accident precisely because I know whatever shenanigans I open will not work as the person who crafted them intended. It is its main feature.

  • (Score: 2) by Gravis on Monday February 08 2016, @03:20PM

    by Gravis (4596) on Monday February 08 2016, @03:20PM (#300631)

    whenever i hear about the Fourier series of Fourier Transform, i always think, "Fourier, TRANSFORM!" but 80s style [tfw2005.com] Σ(゚Д゚;)

  • (Score: 1) by OrugTor on Monday February 08 2016, @04:36PM

    by OrugTor (5147) on Monday February 08 2016, @04:36PM (#300698)

    Thanks for posting.

  • (Score: 2) by pkrasimirov on Monday February 08 2016, @08:19PM

    by pkrasimirov (3358) Subscriber Badge on Monday February 08 2016, @08:19PM (#300859)

    How can I upvote the article? It's great. Thank you.

  • (Score: 2) by opinionated_science on Monday February 08 2016, @11:44PM

    by opinionated_science (4031) on Monday February 08 2016, @11:44PM (#301039)

    it would be nice to add some parameters for play ;-)

  • (Score: 2) by stormwyrm on Tuesday February 09 2016, @04:56AM

    by stormwyrm (717) on Tuesday February 09 2016, @04:56AM (#301187) Journal
    I've read that the mathematical formalism behind the Ptolemaic deferents and epicycles was actually Fourier analysis [wikipedia.org]. The site gives a beautiful illustration of this, those animated circles within circles are exactly those.
    --
    Numquam ponenda est pluralitas sine necessitate.