Geometry & Sound

Posted on March 3, 2008 by Wade Whitehead.
Categories: Classroom Stuff, Science.



When high frequencies are passed through sand spread in a thin layer over glass, strange things happen. As the frequency changes, geometric forms appear and change. This phenomenon has been the subject of curiosity for many teachers and students. Fifth graders, what do you think causes this strange happenstance?

7 comments.

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  J B S
Comment on March 3rd, 2008.

CCCCCC
OOOOOO
OOOOOO
LLLLLL
!!!!!!

I like the video, I prob put on my site :)

  NGA
Comment on March 4th, 2008.

INSANE! I’m gonna repeat that for emphisis. INSANE! I wish we had the equiptment to do that in class. Sand on glass with sound that makes geometric designs rock!!!!

  P.J.R
Comment on March 4th, 2008.

Mr Whitehead,
That is one of the most amazing things I’ve ever seen.Is the piece of glass on the thing that is making the sound?If not, I have no idea what causes that to happen.

  LRW
Comment on March 7th, 2008.

Mr. W., THAT WAS AWESOME!!!!!!!!!!!!
I showed my parents and they enjoyed it, also.

  JBS
Comment on March 9th, 2008.

Hey Mr.W I was eatin dinner with spencer and decided to show him this, he was like, “holy moly man!!!”… I showed parents to, it was cool beans dude

  jbs
Comment on March 21st, 2008.

It is so interesting!

Comment on March 20th, 2009.

that is raely realy cooooooooooooool! i love it

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