Why barrel vibration and standing waves cause group size to enlarge.

[@user045-key77]

Interesting.

[@TunerPlinker]

Glad you like it.

[@peterwhitcomb8315]

You can clearly see the vibration in the longer stick (skewer?). The farther you get away from the base (your finger in this example) of the skewer the more noticeable the vibration will be to detect. It is a cool example of physics in motion.

[@TunerPlinker]

Or is it my shaky fingers. :)

[@asifjhammat]

Waoo😯

[@TunerPlinker]

Cool trick

[@javiersp01]

Thank you

[@TunerPlinker]

You're welcome

[@TunerPlinker]

Glad you like it.