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video How to Confuse A Secondary School Student
A rattleback, also known as an "anagyre", "celt", "Celtic stone", "rattlerock", "spin bar", "wobble stone" or "wobblestone" and by the product names "ARK," "Bizzaro Swirls," "RATTLEBACKS," "Space Pet" and "Space Toy," is a semi-ellipsoidal top which will spin on its axis in a preferred direction. But, if spun in the opposite direction, it becomes unstable, "rattles", stops and reverses its spin to the preferred direction. This spin-reversal motion seems, at first sight, to violate the angular-momentum conservation law of physics. Moreover, for most rattlebacks, the motion will happen when the rattleback is spun in one direction, but not when spun in the other. These two peculiarities make the rattleback a physical curiosity that has excited human imagination since prehistorical times.
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2
Jul 27, 2010. 9:15 PM
garrett10
says:
garrett10
says:
I bought my rattleback at hobby lobby.
Reply
Apr 5, 2009. 6:01 PMcovey12
says:
I HAVE THAT SAME BIRD!!!!!!!!!!
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1
Mar 20, 2009. 1:25 PMstrumbot
says:
it wobbles because the axis is formed skew of the center line
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2
Jun 5, 2008. 9:36 PMPumpkin$
says:
not ebay..... probably glencoe science, my teacher has some in a cabinet
Reply
1
Feb 24, 2009. 4:00 PMGamer917
says:
i have 1 and i made a sort of pull-starter for it so it could spin faster
Reply
Jul 12, 2008. 6:03 PMthe_anaconda
says:
what is that black thing in the back ground called
Reply
1
Aug 21, 2008. 8:57 AMalwinovich
says:
usually called magic/levitating pen it works with repelling magnets in the base and pen
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2
May 22, 2008. 7:34 PMmr.dr.prof.joel
says:
TO EBAY!!!!!!!!!!!!!!!!!!
Reply
Apr 4, 2008. 6:57 PMbob the builder #1
says:
cool
Reply
4
Apr 3, 2008. 12:43 PMdamasta
says:
nice levitating pen/tops (I don't know) in the background
Reply
3
Feb 10, 2008. 8:23 AMHellchild
says:
whats with the scary music?
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2
Mar 25, 2008. 1:38 AMJames (pseudo-geek)
says:
Impending Boom
Reply
3
Mar 27, 2008. 6:39 AMHellchild
says:
oh, that sucks...
Reply
22
Jan 25, 2008. 6:29 PMGorillazMiko
says:
Awesome.... too much cool stuff.
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