In 2013, 20-year-old creator of novelty Peregrine Church learned about super-hydrophobic coatings from a video online, and he began to brainstorm creative uses for the material.
Since super-hydrophobic coatings repel water and keep surfaces dry, and since concrete changes color in the rain, Peregrine thought he might be able to use the super-hydrophobic coating to create hidden messages that only appear on rainy days.
He presented his idea to local organization The Awesome Foundation, who awarded him a $1,000 grant to begin experimenting his concept. Peregrine used the grant money to purchase a variety of super-hydrophobic coatings and began to make small tests near his home.
Fast forwarding to today,
What’s a Rainwork?
Rainworks are positive messages and art that appear when it rains.
Their purpose: To turn rainy days into something to look forward to!
So, check their website for more info: https://rain.works