PURPOSE: To demonstrate that filled bands and empty bands are non-conductive; only partially filled bands are active.
DESCRIPTION: Three identical cola bottles are (1) empty, (2) filled completely, and (3) partially filled. Shake the bottles. Only the partially filled bottle responds to the external force.
REFERENCES: (PIRA unavailable.)
EQUIPMENT: Three corked cola bottles with colored water as photographed.
SETUP TIME: None.
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