Slinky, Large, 90x75mm

Have fun and learn about how waves and springs function. Extends to 2m.
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Nancy B's Science Club MoonScope

Nancy B's Science Club MoonScope
Calling all budding astronomers! Take your star-gazing to a whole new level with this kid-friendly telescope and accompanying journal packed with facts and fun activity prompts.

You'll have hours of fun with this giant metal spring. Not only that, you'll learn about how waves and springs function!

Generations of children have been both entertained and educated by slinky springs just like this one! Watch as it walks down stairs, 'bounces' back and forth between your hands and appears to defy gravity when dropped to the ground.

This spring is a fun way to see the effects of spring motion and watch how waves propagate.

Age: 7+
What You Get
Metal Spring measuring 90x75mm when wound and approximately 2m when extended.

How Does it Work?
The spring appears to walk down stairs by transferring energy along its length via longitudinal waves. The spring follows itself over and results in periodic motion until it reaches the bottom of the stairs.

The spring appears to levitate when drop vertically towards the ground. This is because the change in tension on the spring must propagate to the base of the spring from the top. A lag time of approximate 0.3 seconds creates the impression that the spring is levitating before both ends begin to fall to the ground.
  • Springs
  • Waves
  • Period of Oscillation
  • Harmonic Motion
WARNING: CHOKING HAZARD Small Parts. Not for children under 3 years.
More Information
Length (cm) 9
Width (cm) 9
Height (cm) 8
Age Group 12+ Years
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