To learn about fluid dynamics and how to depict it, I will now use this picture as a motif for painting:

Having spent an afternoon learning the architecture of the upper wave, I remembered a technique that I used a while ago to learn basic shapes, namely filtering the image using paint daub in Adobe photoshop. .

This AP filtering, I assume, is akin to what June recommends ‘squinting at the scene to make the details murky and thinking of masses as forms/shapes’.

How did artists prior to photography learn the architecture of waves? Did they spend many hours watching the rapid motion of waves to learn their possible anatomies? Or, do I have difficulty with what is child’s play for everyone else?