Umbrella Bag Transparent for Sound Experiments (100pcs)
$8.70 excl. GST
Description
This umbrella bag can be used to demonstrate the transmission of sound waves. Inflate the bag with some small particles such as rice grains and observe them dancing to a nearby sound such as your voice.
Size: 120 x 750 x t0.030mm
Color: Transparent
Quantity: 100 sheets