Fizzy fish yo-yo

时间:2019-03-08 10:04:00166网络整理admin

By Barry Fox After elaborate buoyancy tests using a miniature crane made of balsawood, Laurence Jay of San Francisco (WO 98/47387) is ready to make sweets that go up and down like demented fish when dropped into a fizzy drink. The “fish” initially sinks to the bottom of the glass because it is more dense than the drink. The falling sweet accumulates bubbles of CO2 on its surface, which grow and unite to form bigger bubbles. The sweet now becomes buoyant and rises to the surface, where the bubbles on the top escape into the air. This makes the fish flip over onto its back and the remaining bubbles escape. The sweet then plummets to the bottom,