The following is an excerpt from Why Are Orangutan... ...Orange? Soap on a HopeIs it possible to blow a toroidal soap bubble (one shaped like a ring doughnut)? An... ...nimum surface which encloses a given volume. If a toroidal bubble were created, it would not provide such a... ...uter part of the torus a...https://www.neatorama.com/2012/11/15/Soap-on-a-Hope-Can-You-Blow-a-Doughnut-Shaped-Soap-Bubble/
Can You Blow a Doughnut-Shaped Soap Bubble?...
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