The shorthand: Different multiple freeze points, rather than a single freeze origin the freezing itself creates heat energy that creates currents in the liquid rising to the top. The flow sheers off ice crystal in its path that seed other ice patches (@gunsnrosesgirl3↱) A paper, from Ahmadi et al., from Nature Communications, "How soap bubbles freeze"↱: The first mode, occurring for isothermally supercooled bubbles, generates a strong Marangoni flow that entrains ice crystals to produce the aforementioned snow globe effect. The second mode occurs when using a cold stage in a warm ambient, resulting in a bottom-up freeze front that eventually halts due to poor conduction along the bubble. And the video, which apparently does not cue to 13:00: Spoiler ____________________ Notes: @gunsnrosesgirl3. "Different multiple freeze points, rather than a single freeze origin the freezing itself creates heat energy that creates currents in the liquid rising to the top. The flow sheers off ice crystal in its path that seed other ice patches". (thread) Twitter. 22 December 2022. Twitter.com. 22 December 2022. https://bit.ly/3HRp2hs Ahmadi, S. Farzad, Saurabh Nath, Christian M. Kingett, Pengtao Yue, and Jonathan B. Boreyko. "How soap bubbles freeze". Nature Communications. 18 June 2019. Nature.com. 22 December 2022. https://bit.ly/3GeR3yn Danielis, Rosemary. "Ice Bubble Magic". YouTube. 18 December 2017. YouTube.com. 22 December 2022. https://youtu.be/e_caQ1i54pI
