There's a display in the museum here which has an interactive component with a bunch of balls and grates to show how filters work but they made a miscalculation when designing it, so the static electricity generated by the balls constantly rubbing against each other and the grating is enough to actually grab some of the balls and make them hover in mid air instead of falling down.
Added
05/12/2022
Location
Te Papa Museum, Wellington, New Zealand
UID
6445239746
Resolution
1920x1080
Orientation
HORIZONTAL
Length
00:30
Footage type
POV