Slinky has appeared in the Classroom as a teaching tool, in wartime as a radio antenna, and in physics experiments with NASA. In the first 60 years, Slinky has sold over 300 million units. Slinky has been used to teach about tranverse and longitudinal waves.
http://www.youtube.com/watch?v=V2TYNf9dLr8&feature=related
Original Metal Slinky - SGD 9.90
Slinky Junior (collection item) - SGD 6.90
Golden Slinky (collection item) - SGD 199.90
p:s golden slinky is a special order provided from us, hence it include shipment fees
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