Here’s a simple “hot air” balloon experiment with a tea bag, Baynej writes –

“In this movie i (josie baynes) am showinf you an experiment that i have done for a comptition. it is very good and very easy. You could do it your self!” [via] – Link.

Related:

  • Make a propane powered radio controlled hot air balloon – Link.
  • Hot air grocery bag plastic balloon – Link.

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From the pages of MAKE (a little less flame in this one…)