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Metronomes
Posted: 05 October 2012 06:30 AM   [ Ignore ]
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32 metronomes all set to the same tempo, put into motion at different times, all synchronize within ~2 minutes. If you haven’t seen it before, try to guess why. Don’t cheat!  angry

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Posted: 05 October 2012 07:40 AM   [ Ignore ]   [ # 1 ]
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That’s pretty cool!  I would guess that it has something to do with the fact that the table they’re on is free to swing.  It probably averages out the various vibrations.  Am I close?

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Posted: 05 October 2012 07:47 AM   [ Ignore ]   [ # 2 ]
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Yep, you are right. HERE is the full explanation.

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Posted: 05 October 2012 07:49 AM   [ Ignore ]   [ # 3 ]
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I think so. It is amplifying and destructive resonance, communicated by the free hanging table. <—here is the answer in white.

It would be interesting to do this with metronomes that do not have the same rhythm. One could get phase shifts, as in Steve Reich’s music. Somebody has so many metronomes?

Edit: o, you gave the solution already… blank stare

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Posted: 05 October 2012 10:48 AM   [ Ignore ]   [ # 4 ]
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George - 05 October 2012 07:47 AM

Yep, you are right. HERE is the full explanation.

The pen(dulum)-ultimate in peer pressure!

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Posted: 05 October 2012 01:23 PM   [ Ignore ]   [ # 5 ]
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GdB - 05 October 2012 07:49 AM

I think so. It is amplifying and destructive resonance, communicated by the free hanging table. <—here is the answer in white.

It would be interesting to do this with metronomes that do not have the same rhythm. One could get phase shifts, as in Steve Reich’s music. Somebody has so many metronomes?

I think that this would only work with simple harmonics. Extended phase shifts like Reich’s Piano Phase wouldn’t work.

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“All musicians are subconsciously mathematicians.”

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Posted: 05 October 2012 07:32 PM   [ Ignore ]   [ # 6 ]
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The social metaphor is that it is tough to be a non-conformist if you don’t have an independently stable base.

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“Our lives are not our own. From womb to tomb… We are bound to others, past and present… And by each crime and every kindness… We birth our future.”  Sonmi, 2144.

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Posted: 05 October 2012 10:53 PM   [ Ignore ]   [ # 7 ]
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TimB - 05 October 2012 07:32 PM

The social metaphor is that it is tough to be a non-conformist if you don’t have an independently stable base.

I love that quip!

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Posted: 06 October 2012 01:28 AM   [ Ignore ]   [ # 8 ]
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TimB - 05 October 2012 07:32 PM

The social metaphor is that it is tough to be a non-conformist if you don’t have an independently stable base.

Yeah, I wondered why George did not post this in the free will thread… tongue rolleye

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Posted: 06 October 2012 01:30 AM   [ Ignore ]   [ # 9 ]
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TromboneAndrew - 05 October 2012 01:23 PM

I think that this would only work with simple harmonics. Extended phase shifts like Reich’s Piano Phase wouldn’t work.

Thinking is not enough… Hey, you are are a musician! Can’t you borrow metronomes from all your musical colleagues and do the experiment?

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Posted: 06 October 2012 09:42 AM   [ Ignore ]   [ # 10 ]
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No, we all use digital metronomes now.

Alas.

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Posted: 06 October 2012 11:14 AM   [ Ignore ]   [ # 11 ]
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All the digital metronomes I have come across are ugly.

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Posted: 06 October 2012 11:52 AM   [ Ignore ]   [ # 12 ]
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I have a metronome ap on my smartphone. grin

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Posted: 06 October 2012 12:33 PM   [ Ignore ]   [ # 13 ]
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TromboneAndrew - 06 October 2012 11:52 AM

I have a metronome ap on my smartphone. grin

Never thought of that. (One learns something all the time here.) I will get it for my kids’ iPods so they can stop destroying my expensive mahogany one.

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Posted: 06 October 2012 07:47 PM   [ Ignore ]   [ # 14 ]
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George - 06 October 2012 12:33 PM
TromboneAndrew - 06 October 2012 11:52 AM

I have a metronome ap on my smartphone. grin

Never thought of that. (One learns something all the time here.) I will get it for my kids’ iPods so they can stop destroying my expensive mahogany one.

Great idea, I will look for it in the app store!

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Posted: 07 October 2012 05:32 AM   [ Ignore ]   [ # 15 ]
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As a nurse, Asanta, all you really need is to know the song “Stayng Alive,” by the Bee Gees. Supposedly, when you are performing CPR and try to restart the heart, the best way to stay close to the tempo of the recomended 100 pushes per minute is to keep humming the song.  wink

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