Singing Rod Three Tone Set Make these aluminum rods sing! email to friend
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Make these aluminum rods "sing" by rubbing them until they vibrate with high-pitched sound! Hold your ears, the more you stroke, the louder they sing! Great as an addition to your selection of sound wave demonstrations. Comes complete with three aluminum rods (24 inch, 30 inch, and 36 inch), special rosin, and fully illustrated science activity guide. Also available: Single 24-inch Singing Rod (WSNG-100).

What's included?

• 3 Singing Rods in different lengths
• 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. Discover that rods of different lengths create different waves and frequencies. Use this fact to discuss nodes, anti-nodes, and transverse standing waves. It's all in the science of sound!