The work of oxygen equipment, the release of oxygen: Listen & Download The work of oxygen equipment, the release of .mp3 Error! Change your browser, please! ⇓ Download Wind tunnel ventilation ⚠ Air pressure ⚠ Helium balloon ⚠ Rope torsion ⚠ Soccer ball ⚠ A stream of air breaks out of a metal pipe ⚠ Suction action of air ⚠ Steam ⚠ Air is blown through a glass tube ⚠ Cut through the air with a gas burner ⚠ Oxygen balloon ⚠ Balloon descent ⚠ ★★★★★