No matter how old you are, everyone loves to blow bubbles, and the bigger the better. But blowing out a record big bubble requires very precise bubble fluid. According to a paper published in the journal Physical Review Fluids, physicists have identified a key component of mixing different chain-length polymers, which can be blown out of soap film that can stretch thin enough to form huge, but not cracked bubbles.
The paper’s co-author, Emory University physicist Justin Burton, took an interest in seeing street performers blowing huge bubbles during a conference in Barcelona. His team found that polymer chains are the key to creating huge bubbles, while polymer chains of different lengths form stronger soap films than single-length polymer chains. Their published formulainclude includes: 1 litre of water, 50 ml of professional detergent, 2 to 3 grams of guar powder, 50 ml of external alcohol, 2 grams of baking powder.