Gely treats group of noble gases and possesses some extent of narcotic influence. On this indicator he concedes to all other inert gases so to the person who decided to inhale them, accustoming does not threaten. But also, by means of this gas it is possible to amuse the company of friends, it changes a voice to unrecognizability, doing it squeaky and thin, as at heroes of children's animated films.
Why the voice from helium changes?
The voice is sound vibrations which are formed at fluctuation of vocal chords. Its timbre and frequency of fluctuations of sheaves depend on density of the environment surrounding it.
Density of helium is nearly 7 times less, than usual air. At inhalation of this inert gas the vocal chords contract, the frequency of their fluctuation increases, and the voice sounds in the increased tonality. The made sounds remind someone a voice of the character of animated films, and to someone – peep of a mouse or the speech of the baby. But, anyway, to people around it becomes cheerful.
And here after sulfur fluoride inhalation – heavy gas which is 5 times more dense than air even girls begin to speak a low bass.
Whether helium inhalation is safe?
In general, it entertainment is considered rather safe as together with gas oxygen gets into a human body. Besides, it is difficult to distinguish the person who inhaled helium unless except for the moment when he begins to tell something. And gas cannot be defined — it does not possess either a smell, or taste. Nevertheless, from helium some by-effects can appear. Some people can have signs of oxygen starvation, such as dizziness, headache, the complicated breath, nausea. Vocal chords at inhalation of helium fluctuate with higher frequency that causes desirable effect, however as a result of them it is possible to damage, and this process is considered irreversible. Deep and frequent breaths of this inert gas are capable to provoke emergence of helium bubbles in blood. On reaching them a brain they can cause a stroke and even to lead to a lethal outcome. There can be unsafe also a usual glut of lungs helium when oxygen content in a human body is significantly lowered. Here still interesting fact: if for a while to place the person in the cell which is filled only with helium after a while that will choke. It is connected with what contains in such gas only the couple tenth oxygen percent. In addition to it it is possible to add that overindulgence with helium is especially dangerous to pregnant women, and not only to future mom, but also to her kid. And therefore just it is the best of all to admire easy balls, without trying to inhale the gas which is contained in them. Having decided to try on himself effect of "the amusing gas", do not inhale a large amount of helium for once. Better make several small breaths and when effect of gas takes place, try once again, only do not go too far, health and life – the most important.