This video shows a paper balloon called a kamifusen (it's like a paper beach ball in structure minus a valve) being "inflated" (more accurately, being rounded out to fuller volume) by being hit back and forth between the hands like a ball. Although not strictly origami, origami principles in the form of folded paper physics are definitely at play. https://youtu.be/un-pTKfC1dQ Tadashi Tokieda in the video says this rounding out occurs because as the side directly hit flattens and rounds back out a little from resisting crease formation, the opposite side rounds out with the force and with enough hits, it becomes rounder as a whole. I feel like there's more to the situation than what first appears. Thoughts on this phenomenon?
Blythe Creamer
