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Post by wstrgrl on Jul 8, 2006 23:00:28 GMT -5
I am looking for ...I guess it could be called a toy, it was 5 I think metal balls suspended on nylon fishing line on a square frame. You could make as many as you wanted move and when they hit the remaining ones the first ones would hold still. OK, that sounds crazy doesn't it. It was kind of a "coffee table" type thing I think. Anybody know what that was called?
I just discovered this site, I Love it!
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redhead
New Member
Resident Diva
Posts: 3
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Post by redhead on Jul 10, 2006 17:47:26 GMT -5
It's a Newton's Cradle and I know that Spencers sells them!
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Post by tikibob on Jul 10, 2006 18:11:47 GMT -5
I am looking for ...I guess it could be called a toy, it was 5 I think metal balls suspended on nylon fishing line on a square frame. You could make as many as you wanted move and when they hit the remaining ones the first ones would hold still. OK, that sounds crazy doesn't it. It was kind of a "coffee table" type thing I think. Anybody know what that was called? I just discovered this site, I Love it!  Newton's CradleNewton’s Cradle is a classic desk toy. Also known as "Balance Balls", "Newton's Pendulum" and "Newton’s Balls". Newton's cradle is a device that demonstrates conservation of momentum and energy. It is constructed from a series of pendulums (usually 5) abutting one another. Each pendulum is attached to a frame by two strings of equal length angled away from each other. This string arrangement restricts the pendulums' movements to the same plane. Newton's cradle has been a popular desk toy since being invented, named and produced in 1967 by English actor Simon Prebble. At first, a wood cradle version was sold by Harrods of London and later a chrome design was created by the sculptor and future film director Richard Loncraine. In pedagogic settings, Newton's cradle is sometimes used to present the concept of "action-reaction" (Newton's third law), with the words said to the cadence of the clacking pendulums as they execute a single cycle of swinging and clacking oscillation. This is not a very clear presentation of action-reaction. In fact, for those who have mastered high school physics the conservation laws can be easily derived from Newton's second and third laws. Doesn't sound crazy at all. My Dad got one as a gift back in the 60's, I have it now. It's pretty cool.   |
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