Singing Rod Make this 2-foot rod sing! email to friend
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Make this 2-foot rod "sing" by rubbing it until it vibrates with high-pitched sound! Hold your ears, the more you stroke, the louder it gets! Great as an addition to your selection of sound wave demonstrations. Comes complete with aluminum rod, special rosin, and fully illustrated science activity guide. Also available in a 3-tone Singing Rod Set (WSNG-300).

What's included?

• 1 Singing Rod (2 feet long)
• Rosin
• Illustrated science activity guide

How does it work?

Get ready to make the rod sing! Collect a little rosin on your fingers. Grip the rod tightly at the midpoint and rub the rod between your thumb and first two fingers from its midpoint to the end. It may take a bit of practice, but you won't mistake the sound when you hear it! Move your stationary hand down the rod to the quarter point to make a higher pitch!

What does it teach?

Learn where sound comes from—alternating condensations and refractions of the air surrounding the rod. Students should be able to see the oscillation at the free ends of the rod, which produces a certain harmonic. This should easily lead into a discussion about nodes, anti-nodes, and transverse standing waves. It's all in the science of sound!