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Does anyone know how to make a model highlighting the function of the diaphragm? For my singing students ;) Answered


NachoMahma is spot on, that's the best one I know of, but anybody who has not seen this before might find such a brief run down slightly confusing without an images to back it up.


Here you go. Feel free to substitute the 3 way hose connector with 2 straws, one for each balloon, and a liberal amount of duct tape.

. I like that. It would be much better in a classroom environment. . I understood what I wrote perfectly.

:) I understood it as well, but only because I had done it before. I figured a picture or two might help. I merely meant to supplement, rather than undermine. ;)

Hiya phalanx447,
Thank you so much for helping me with my enquiry - as I mentioned to NachoMahma, once I had the illustrations from your link to highlight his instructions, I was able to understand what they were trying to tell me.
Have an awesome day!

. You figured right. The pictures truly were worth 1K words.
. The "<snicker>" was supposed to acknowledge that just because I understood it, doesn't mean that anyone else did. I'm glad you posted better instructions.

. Cut the bottom out of a two or three liter soda bottle. Stuff two balloons (lungs) inside the bottle so the mouths poke through the top and are open to ambient air. Cover the bottom with a cut balloon (diaphragm) so that you can move it up and down to deflate/inflate the "lungs."

Hiya NachoMahma,
Thank you so much for answering my question - once I checked out Phalanx's link to see the illustrations for your instructions, understanding dawned on me lol :)
Have an awesome day!

Nye stole it from his hero...I forget his name "the wizard" Dont believe me, check out billnye.com and check his memoirs.

Mr. Don Herbert. Wow, what a great show that was.

. I wouldn't be at all surprised if I didn't first see this on Mr. Herbert's show, Watch Mr. Wizard (those old B&W clips make me feel old heehee), but, as frollard points out, it's been around since long before Mr. Wizard.
. Definitely not my original idea. ;)

Oh, okay, I just remembered that from Bill Nye's show.

It's been a standard classroom experiment for a long time - great for visualizing pressure etc.

to clarify, bill nye is my hero.