Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
Double walled glass cup with black glass marbles and water.
The black glass marbles retain heat and warm the surrounding water faster.
This photo shows the water is 90% which is pasteurised.
Appears on these pages
How to make Solar tea using black marbles and a double glass tea cup. Water starts vaporizing...