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Review title: Too small.
Product review: The product was considerably smaller than any other Newton's Cradle I have seen (it is about 4" tall, 4" wide, and 3" deep.) It demonstrates the principle, but its performance is disappointing. A Newton's Cradle should show the conservation of momentum and energy. However, this one is so small, and made with 'fishline' so the elasticity of the line allows the balls to begin swinging in unison--violating the very principle that it is supposed to be demonstrating. After about forty strikes, the balls are just swinging in harmony, as opposed to in opposition. Instead of showing that the energy of one ball is conserved by moving another ball, it merely shows that the energy is lost into the strings.The small size allows me to demonstrate the concept, but only as a visual reminder of how the viewer has probably seen this occur on a nicer product when they were in school. It is a valid reminder of what a "Newton's Cradle" is, even though it isn't a good one itself.
