Temporary restraining order. No temporary restraining order shall be granted without notice to the adverse party unless it clearly appears from specific facts shown by affidavit or by the verified complaint that immediate and irreparable injury, loss, or damage will result to the applicant before notice can be served and a hearing had thereon.
Helium is not only used to fill up balloons, but is also used in medicines and medical equipment. And as you noted, it will give you a high-pitched voice for a short period of time if inhaled. While the squeaky voice can be a crowd-pleasing party trick, huffing helium isnât always all fun and games.
Voice pitch decreases tremendously when inhaling SF6 because the speed of sound in SF6 is much less than in air. Sound travels through SF6 at only around 120 m/s, whereas it travels through air at around 340 m/s. Sound travels through helium at around 900 m/s. SF6 is a non-poisonous gas, but should only be inhaled in small quantities (if inhaled at all). It is suggested that one have a tank of pure oxygen gas on hand before demonstrating SF6 inhalation and breathe pure oxygen for about ten breaths before inhaling SF6.