How to Confuse A Secondary School Student

 by kentchemistry.com
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.
garrett10 says: Jul 27, 2010. 9:15 PM
I bought my rattleback at hobby lobby.
covey12 says: Apr 5, 2009. 6:01 PM
I HAVE THAT SAME BIRD!!!!!!!!!!
strumbot says: Mar 20, 2009. 1:25 PM
it wobbles because the axis is formed skew of the center line
Pumpkin$ says: Jun 5, 2008. 9:36 PM
not ebay..... probably glencoe science, my teacher has some in a cabinet
Gamer917 in reply to Pumpkin$Feb 24, 2009. 4:00 PM
i have 1 and i made a sort of pull-starter for it so it could spin faster
the_anaconda says: Jul 12, 2008. 6:03 PM
what is that black thing in the back ground called
alwinovich in reply to the_anacondaAug 21, 2008. 8:57 AM
usually called magic/levitating pen it works with repelling magnets in the base and pen
mr.dr.prof.joel says: May 22, 2008. 7:34 PM
TO EBAY!!!!!!!!!!!!!!!!!!
bob the builder #1 says: Apr 4, 2008. 6:57 PM
cool
damasta says: Apr 3, 2008. 12:43 PM
nice levitating pen/tops (I don't know) in the background
Hellchild says: Feb 10, 2008. 8:23 AM
whats with the scary music?
James (pseudo-geek) in reply to HellchildMar 25, 2008. 1:38 AM
Impending Boom
Hellchild in reply to James (pseudo-geek)Mar 27, 2008. 6:39 AM
oh, that sucks...
GorillazMiko says: Jan 25, 2008. 6:29 PM
Awesome.... too much cool stuff.
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