3D30.10 V
ERTICAL
R
ESONANCE
T
UBE
Version 1
A tube within a tube full of water allows easy adjustment of the length of the air column for resonance with various tuning forks.
(explain function of felt pad)
Version 2
A cylinder filled with water at the lower mark will resonate with tuning forks at 341.3 and 1024 Hz, but will not resonate with a 683 Hz fork.
(allow time for water to reach room temp)
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