Sunlit Purity: The Home Solar Still Challenge

Added: 2026-05-24

[00:00:00]Today, a curious mind builds a DIY solar still to purify water, showing how sunlight can separate impurities through evaporation.

[00:00:09]Materials are a clear plastic bowl, a smaller cup, plastic wrap, a rock, and a sunny window sill. Set the small cup in the bowl, seal with wrap, and place the rock on top to create a dip over the cup. The sun heats the water, it evaporates, condenses on the wrap, and drips into the cup, proving evaporation and condensation.

[00:00:29]This safe, simple experiment connects to real distillation ideas and invites questions about water cycles and sustainable science at home.