This time we used a large piece of polycarbonate sheet to make a greater diameter of external tube to wrap around a larger bubble generator. The result: more space of cavity for bubble production and flow. We tested the effects of different air inlet restrictions (one with a hole in the half-ball shaped cap, and one without a hole) and effects of the old and dry bubbles replaced by new and wet bubbles.
A story about Richard Nelson and his simple and yet unprecedented inventions