This image is from one of those play days where you rely on experimenting and serendipity to carry you through. 

It is 100% like being a kid in art school—seeing things you have never seen before, making a few mistakes, working through them, and then discovering successes. ⁠
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I absolutely LOVE the interplay of science and art. Knowing a bit of chemistry and fluid dynamics allows one to set the scene and let the reactions happen!⁠