It can also be realized by electrostatic principle. Electrostatic method is to rub the balloon on the hair, and the electricity on the ceiling is opposite to that in the balloon. So you can take it off. Nowadays, balloons that can float on the market are generally nitrogen, because hydrogen is more dangerous and helium balloons are more expensive.

Precautions for balloons:

The diameter of the balloon after blowing should be smaller than its rated size, otherwise it will burst easily. Due to the influence of transportation, all aluminum foil balloons were deflated and sent out. Balloons should avoid sharp objects and direct sunlight, and should not be over-squeezed. Children under 8 years old should be used under the supervision of adults. Please clean up uninflated balloons and sundries in time to avoid falling into children's mouths by mistake. Heart-shaped balloons are more difficult to blow than round balloons. Please slow down.

Please fill the floating balloon with hydrogen, but not hydrogen. Hydrogen is explosive and flammable, which has been banned by the state. It is suggested to choose a pump to inflate the balloon or inject helium. Don't believe some videos of Tik Tok. It is impossible to inflate a balloon with carbon dioxide.

Even the lightest helium has no power. An adult of 1.20kg needs 80,000 helium balloons to float people. Helium has little buoyancy.