Dot.ca's takeoff...



      

12:14-appeared to head north east Ei

OK...needing to let my geek out...

http://youtu.be/Aaxw4zbULMs

Five metronomes are set to 176 bpm and placed on a Foam Core board. When empty cans are placed underneath, the board is free to move from side to side and the metronomes are able to influence each other into synchronization. When the cans are removed the metronomes are no longer physically coupled and some of them begin to fall out of step.

Our demonstration is a copy of one that Bryan Daniels (Ohio Wesleyan University) made for his student research work: http://go.owu.edu/~physics/StudentResearch/2005/BryanDaniels/index.html

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http://www.math.pitt.edu/~bard/classes/mth3380/syncpapers/metronome.pdf

Synchronization of metronomes
James Pantaleone
Department of Physics, University of Alaska, Anchorage, Alaska 99508
(Received 1 April 2002; accepted 24 June 2002)
Synchronization is a common phenomenon in physical and biological systems. We examine the
synchronization of two (and more) metronomes placed on a freely moving base. The small motion
of the base couples the pendulums causing synchronization. The synchronization is generally
in-phase, with antiphase synchronization occurring only under special conditions. The metronome
system provides a mechanical realization of the popular Kuramoto model for synchronization of
biological oscillators, and is excellent for classroom demonstrations and an undergraduate physics
lab. © 2002 American Association of Physics Teachers.

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OK...I feel better now!

I still have a LOT of catching-up to do...

The found a proper scrape...excellent!

And both perched on the cameras opposite ends now

(proper posting later)

Notice that the "bridge" beneath the metronomes is oscillating in time with them. This is why soldiers break cadence when marching across a bridge.

I've heard about that, with soldiers; it was explained as having something to do with a frequency that mechanically resonated with the bridge and could make it fall. Does that make sense?  I'm wondering in this case if some fuzzy initial majority tendency got the table moving in a way that influenced more and more of them? In other words, maybe it happened because of a subtle movement of the table?

I had seen another similar video once. I believe the explanation was something along the lines of the vibration of the table, resonating at the same frequency, is what eventually brought the metronomes into synch. I'll have to dig this weekend...

http://youtu.be/Law2_GpeKig

Three days with us and Snow is growing at an alarming rate, based on photos and video that we’ve been watching. Dinner times go down very well, albeit gory for us humans in seeing it all in full-blown hi-def colour now, but Snow is not leaving a smidgeon of food ungulped! Indeed Snow seems to be quite adventurous and has already been seen trying to waddle up the side of the scrape

A brief video clip here of the little bobblehead after a feed from Swift. You can indeed just hear Snow chirping away for mum’s attention. Swift is a great mother, very attentive, protective, very careful when feeding. Beau is yet to make his mark as a mentor for Snow yet though, although can occasionally be seen playing his role too, when not hunting.

   

We were discussing on ustream chat that something seemed different about Dot.ca today.  I thought there was something Kaver-ish in his look today. Braveheart put the right word to it...he looked content.

What a long way he and we have come since he first arrived!  

downward & eastward 17:15 Ei

   

Bowing from Cam 4 & the nest box

and channel 2 is off line 11:36 Ei

Cub exam # 6 

http://link.brightcove.com/services/player/bcpid1635268009?bctid=1861273228001

Thank you!

This is the photo I was looking for...I know I have a higher res version on my external drive...



Dan getting Jemison's attention when he came to ground...

From nycbird...

Think I can hear both girls singing "This Land is My Land"