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They used to make swamp coolers that you would put in your car window and it would blow cool air into the car. I always thought those were really cool. Comple

• SilasX 5y ago
  Hah, I had the same reaction to setting up a siphon. That's for when you need to get a liquid up over a hump and down to a lower point. You draw the liquid into a tube from the source [1] and drag the outlet to a lower point. Then, as if by magic, the higher pool gets sucked through the outlet until it's drained, without any mechanical pump. https://en.wikipedia.org/wiki/Siphon https://en.wikipedia.org/wiki/Siphon [1] you can do it by sucking it in like a straw, but there are less gross ways like using a flexible bottle to provide pumping action