h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

The size of bubbles is also interesting - as it relates to the internal pressure (and so to the pressure used to create\blow the bubble). It's counter-intuitive. The radius of the bubble is inversely proportional to the internal pressure - which means that the harder you blow, the smaller the bubble you get! If you want a huge bubble, you have to blow very slowly, so that the internal pressure is only very slightly greater than the external air pressure.

Bloop, bloop, bloop.

which applies to blowing bubbles from bubble mixture too then...

Indeed it does. Translating the theory into practical actions (or in other words, creating some Bubble Technology) goes like this:

We're trying to keep the applied pressure as low as possible, while maximising the amount of air pushed into the bubble. As well as keeping the overpressure (the "blow") low, we use the fact that Pressure = Force/Area, so we make the opening to the bubble (the bubble-blowing ring) as large as possible. (Having the area large makes the fraction Force/Area small, so it makes the pressure small).

So there you have it: Build yourself a large ring to dip into your soap solution, and blow into it very gently (moving slowly closer to a gentle electric fan works well.

Happy bubbling.