Imagine never running out of water because your bottle refills itself as you ride.
While it sounds like the stuff of science fiction, the science is very straightforward. Fontus, named after the Roman god of springs and wells, is a small startup developing a pair of self-filling water bottles that collect moisture from the air and condense it into drinkable water, allowing you to ride further (and perhaps putting some domestiques out of their jobs!)
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The Fontus Ryde is powered by solar cells that cool a series of hydrophobic teeth. As air moves over these teeth the temperature of the air drops, causing water vapor in the air to condense into water droplets. The droplets run down the teeth and are collected in the bottle.
The Ryde relies on the forward movement of the bicycle to push air through the condensing system. Presumably the speed of the rider could also have an effect on the rate condensation.
You can read more at BikeRadar.com
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