How to cool down watermelon on direct sunshine Tips & Tricks

Here's a nice tip to cool down a watermelon in direct sunlight.
Beside a watermelon, you will just need a big knife, and sunlight.

Cut your watermelon in half, and just leave it on direct sunshine.
About ten minutes later, it will be cooling off.
How is that possible?
It is thanks to the law of thermodynamics:
The water evaporating from the watermelon takes the heat away too.

The more hot and dry it will be the better. Furthermore, if there is wind, it is for the best.

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