Talk:Lissajous curve

3 Dimensional diagram, but no mention of 3 Dimensional Lissajoux figures

the second diagram on the page is described as a lissajoux curve in 3D, but there is no mention of Lissajoux curves with more than 2 dimensions on the page. stib (talk) 12:37, 8 March 2009 (UTC)

Conflict with Spirograph page

The webpage for Spirograph states that (paraphrased) spirograph drawings look similar and are based on similar math, but this page states that spirograph drawings look similar but have somewhat different math. Neither is backed by a reference. --Edgriebel 19:15, 8 September 2006 (UTC)

What are the parameters?

Please describe what the parameters mean, their limits etc. -SharkD 00:41, 1 November 2006 (UTC)

Diagram and description at odds

The phase shift/ratio diagram and the general description of the curve are at odds. The article states that a parabola is gotten by phase shifts of pi/2, while the diagram shows a parabola at pi/4. -SharkD 20:10, 1 November 2006 (UTC)

a:b ratios are wrong

November 2006 a & b ratios shouls be inverse through out the whole article. (eg. If the article says a:b=1:2 the graph is actually a:b=2:1) This error is consistent in the whole article.

Animated?

Would an animated lissajous curve be a helpful addition? I think that done from the right angle, it could show the circular nature nicely. Regards, Ben Aveling 11:22, 30 January 2008 (UTC)

Lissajous Pronunciation

It might be a good idea to show how to pronounce Lissajous? —Preceding unsigned comment added by Sero12 (talk • contribs) 10:03, 5 March 2008 (UTC)

Done. I say it LEE-suh-zhoo, and I think that's right, but I welcome edits. —TedPavlic | (talk) 15:16, 15 October 2008 (UTC)

The pronunciation is "Lee-sah-ju", since in French the double s between two vowels makes a soft s sound. The final s is also silent. —Preceding unsigned comment added by 147.188.32.118 (talk) 12:36, 12 August 2010 (UTC)

Image copyright problem with File:ABCTelevision.svg

The image File:ABCTelevision.svg is used in this article under a claim of fair use, but it does not have an adequate explanation for why it meets the requirements for such images when used here. In particular, for each page the image is used on, it must have an explanation linking to that page which explains why it needs to be used on that page. Please check

• That there is a non-free use rationale on the image's description page for the use in this article.
• That this article is linked to from the image description page.

This is an automated notice by FairuseBot. For assistance on the image use policy, see Wikipedia:Media copyright questions. --05:11, 2 January 2009 (UTC)

Ok. Done. Thanks. —TedPavlic | (talk) 21:12, 2 January 2009 (UTC)

wrong phase shift in examples section

in all other works about lissajous curves examples shown in the example section are for phase shift 0 or pi, not the pi/2. this is also true from my own experiments —Preceding unsigned comment added by 89.228.251.75 (talk) 21:56, 12 March 2011 (UTC)

External links

I cleaned up the External links section because it seemed to be a WP:SPAMHOLE with links to personal web sites, blogs, directories of shareware, etc per WP:LINKSTOAVOID and WP:NOTDIRECTORY. Per WP:SPAMHOLE I did an incomplete (incompetent?) removal so other editors can remove more, or restore some if there is a reason per policy and guidelines to keep them. Fountains of Bryn Mawr (talk) 02:10, 27 October 2012 (UTC)

A Commons file used on this page has been nominated for deletion

The following Wikimedia Commons file used on this page has been nominated for deletion:

• Lissajous-Figur 1 zu 3 (Oszilloskop).jpg

Participate in the deletion discussion at the nomination page. —Community Tech bot (talk) 04:37, 16 October 2018 (UTC)

Closed ?

Other ratios produce more complicated curves, which are closed only if a/b is rational. Is parabola a closed curve ? Nedim Ardoğa (talk) 17:23, 16 January 2020 (UTC)

Citations not needed in "Application for the case of a = b".

In section "Application for the case of a = b", the two "citations needed" disclaimers should be removed -- the statements made can be derived from information previously given. BMJ-pdx (talk) 16:39, 3 July 2020 (UTC)

Circle spring animation is wrong

If you look at the animation with the circle with horizontal and vertical spring arranged around it in a box shape, and you watch the vertical line swooshing back and forth across the circle, it stops halfway when it moves left. This is not simple harmonic motion ladies and germs, and does not reflect how two pairs of Hooke's law springs behave attached with a frictionless crossbar double linear bearing that would trace out a circle. Compare with the actual simple harmonic motion animation on a circle further down the page shown below two sinusoids.

It may be as simple as cutting out select frames to get the image close enough that it is indistinguishable by eye from simple harmonic motion ThatOneLooksSoSad (talk) 11:42, 15 July 2022 (UTC)