what's that thing they invented for the developing world where you put it on a dirty lake and the sun rays evaporate the water and it goes up and into a container and it's clean
It's called a solar still. It is a device that uses the heat energy from the sun to evaporate and purify contaminated water. The water vapor then condenses on a clean surface, such as a plastic sheet, and flows into a container for collection as clean water. They are often used in developing countries where access to clean drinking water is limited.
do these water contain minerals?