Talk:Standing Waves

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Messages to the Future

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The following items are just meant to be reminders. If one of these items needs clarification, or seems like a great idea that you don't know how to implement, see What Makes a Good Math Images Page?.

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General Comments

  • OH MY GOD YOUR APP IS AMAZING!!! I just sat here for like five minutes clicking. This is now my FAVORITE THING on the whole Math Images site! SO MUCH FUN, and also it's very clear what's going on… ok, I'm going to try and pull myself away and read the rest of the page now. -Kate 14:07, 15 July 2011 (UTC)
  • Kate 14:41, 15 July 2011 (UTC): I found it weird and upsetting that you don't mention the violin once in this whole article. It is very well known and it does show the harmonic properties that you were talking about, and just how can you talk about string instruments without mentioning it??? Other than that, I think this page is really awesome so far!

Thanks for the feedback on the app! I also take it you're a violin player... :P I could include that in the examples list. 7/15/11 sammat

Hahaha, how did you guess? I also used to play bass clarinet, so I know a little bit about wind instruments too. I assume you play guitar?
re: your concerns about keeping things short - this page can definitely stand to be longer, especially if it's going to be an image page. Check out some of this year's approved finished pages (Solving Triangles, Markus-Lyapunov Fractals) and some of last year's pages (Ulam spiral, Monty Hall Problem) if you want to get a better sense of how long pages should be. -Kate 01:17, 17 July 2011 (UTC)

Section-specific comments

Basic description

Kate 14:41, 15 July 2011 (UTC):

  • I assume the two red links are red because you're going to write a page on them at some point? Might I suggest that you use a balloon with a link there, for now at least, so that people who know nothing about music or sound can get a short definition, and then they can click through if they want more.
  • Other than that, I thought this section was very clear, although it might be a little short - if you don't expand the MME, there's almost no content on the page.

A More Mathematical Explanation

Harmonics

Kate 14:41, 15 July 2011 (UTC):

  • I love the app, but I think you need a little more explanation before it. Maybe give a one-sentence definition of a harmonic, and provide a little more explanation of what's going on in the app. Explain why the lower note plays again every time I lift my finger, and maybe even explain that when I'm clicking I'm pressing the string down? I'm just thinking if you've never played a string instrument before, you might think that the finger here is plucking?
  • The fundamental frequency in a standing wave system like an instrument, has the longest wavelength possible,
I thought this was a little awkward, especially that comma after instrument. Might sound better as "In a standing wave system like an instrument, the fundamental frequency is the frequency that has the longest wavelength possible…"
  • lowest frequency possible, for that system - no comma here.
  • Your explanation is really good here!

I'll look at the wording here, thanks. Also, I was thinking of having longer explanations for the app and for the basic description. In my attempts to be brief and not boring I tried to condense it, but I could definitely expand. 7/15/11 sammat

The Harmonic Series in Practice

Kate 14:41, 15 July 2011 (UTC):

  • I think it'd be cool to include a video in the string section, to help give the reader a better sense of how harmonics sound. (Or at least to link to one.) I found this video on YouTube that I think is pretty good: http://www.youtube.com/watch?v=Ue90f5r-2Qw
this is a very good video, thanks! as far as hearing the sound of real harmonics, the app does that. All of the sounds in the app I recorded myself on my guitar playing the corresponding harmonics. 7/15/11 sammat
Kate 01:17, 17 July 2011 (UTC): Yeah, I mean you could even make your own video. I know the app does give the sounds, but I think most people would also really enjoy seeing an example on an actual instrument. Even if it's the guitar.
  • In the wind instrument section, the parenthetic examples of different instruments aren't going to be any help to people who don't know how these instruments work. I would suggest that instead of trying to summarize all of it at once, you pick a couple instruments and go through them in more depth with pictures. Like, this is what a clarinet looks like, this is where the sound comes from, this is where the standing wave resonates, this is how you change the pitch, etc.
  • I might be totally wrong at this, because I don't know that much about it, but I was wondering if the difference between cylindrically shaped and conically shaped instruments is relevant to this section?
It is relevant, but there is enough to talk about there to fill an entirely new page. I'm also not completely sure of the math and physics going into that. It might be good for a future page, or at least a long helper page. Again, I was trying to be brief here. I'm not sure exactly what page lengths are accepted, and how much elaboration is allowed/expected for these things yet. 7/15/11
Yeah, I don't know the physics of it either, but like I said up top, you definitely have a lot of room to expand, so that might be a direction to go in. I know I thought it was super awesome when I first had it explained to me.



I saw that in your equation "positiveingteger" doesn't have a space in it. In the math tags, you can use \ text {} (without spaces) to write text where spaces are recognised. I also noticed that you had links to empty pages. are those links intentional that you plan to make pages for later?

Nordhr 16:41 30 June 2011

Jenn Chan (chanj)

Pat said that the string vibration should slow down because it gives him a seizure.
Also, the curve part on the bottom of nail is not exactly white.


I love the color in the app! It's very aesthetically pleasing.

Tyler Sammann (sammat)

17:48 1 July 2011
@Jenn
I've slowed down the strings vibration a bit, and the new fill color should help it seem less "glitchy."
I'm going to look into giving the finger image an upgrade.

@Rebecca
I'll try out that fix for the math tag problem tomorrow.
Also, those page links are going to be helper pages for those topics, which I'll write sometime soon hopefully.

Comments from Barb:

  • done make "image intro" a complete sentence or two that introduces the topic as well as describes the picture.
  • done in "basic decription", briefly describe a non-standing wave (more than just "a wave that does travel").
  • done give examples of wind & string instruments in parentheses (e.g., clarinet, flute)
  • done you didn't explicitly describe the inharmonic frequencies. say something interesting about them... maybe discuss the name and the relation to "harmony", and what people often think of as harmony. People might think inharmonic just means sounds bad.
  • done put a comment & link somewhere on the page where people can find the code for the flash app on googlecode. (also can link to the googlecode mathimages helperpage)
  • done maybe add to the text near the flash app the notes that are played for 1/2, 1/3, 1/4, & 1/5. (you do say the original is E)
  • stylistic choice non-technical, aesthetics comment: fingernails are pink (no, Rebecca did not pay me to say this).
  • can you play all harmonics simultaenously when the cord is not pressed (& the appropriate subset when it is)? And at the appropriate relative intensity? (Or are these harmonics already included in the real samples?)
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