How freezing a soap bubble turns it into a ‘snow globe’

Differences in surface tension create currents in soapy films that move ice crystals around

soap bubble

THIN ICE  A patchwork of ice crystals swirls across the surface of a soap bubble as it freezes. The glittery display is caused by a mismatch in surface tension in different regions of the soapy film.

F. Ahmadi, C. Kingett and J. Boreyko

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Physics

From the Nature Index

Paid Content