Furthermore, buoyancy itself is reduced by turbulent ... Friction forces are typically assumed to be strong for small drafts in convection, but cannot directly be measured, and could be small ...

In this installment of Hot Science we present three questions that may help you to better understand buoyancy. The first is a kind of warm-up question, dealing with general buoyancy principles.

These classroom demonstrations were designed by Prof. John Hart at the University of Colorado Boulder. Construction of the experiments and filming of the clips on this website was carried out by Scott ...